Gene therapeutics for fibrodysplasia ossificans progressiva

ABSTRACT

In some aspects, the disclosure relates to compositions and methods for treating fibrodysplasia ossificans progressiva (FOP) in a subject. In some aspects, the disclosure provides isolated nucleic acids, and vectors such as rAAV vectors, configured to express transgenes that inhibit (e.g., decrease) expression of mutated AVCR1 gene in muscle cells or connective tissues.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit under 35 U.S.C. 119(e) of U.S. Provisional Application No. 63/121,221, filed Dec. 3, 2020, entitled “DEVELOPMENT OF NOVEL GENE THERAPEUTICS FOR FIBRODYSPLASIA OSSIFICANS PROGRESSIVA” and U.S. Provisional Application No. 63/251,822, filed Oct. 4, 2021, entitled “DEVELOPMENT OF NOVEL GENE THERAPEUTICS FOR FIBRODYSPLASIA OSSIFICANS PROGRESSIVA,” the entire disclosures of each of which are hereby incorporated by reference in their entireties.

REFERENCE TO A SEQUENCE LISTING SUBMITTED AS A TEXT FILE VIA EFS-WEB

The instant application contains a sequence listing which has been submitted in ASCII format via EFS-web and is hereby incorporated by reference in its entirety. The ASCII file, created on Dec. 2, 2021 is named U012070152US02-SEQ-SXT and is 232,210 bytes in size.

BACKGROUND

Fibrodysplasia ossificans progressiva (FOP) occurs at an incidence of one per 1.36 million to 2 million people. Patients exhibit abnormal bone formation in the skeletal muscle and in connective tissues. This heterotopic ossification (HO) leads to immobility and severe pain through progressive extra-skeletal bone formation in skeletal muscles, tendons, and cartilage. However, no effective treatments are currently available, except for high dose of corticosteroids for flare-up conditions, which can reduce the intense pain and edema as a symptomatic relief.

SUMMARY

Aspects of the disclosure relate to compositions and methods for treating fibrodysplasia ossificans progressiva (FOP) or reducing the flare-up conditions associated with FOP. The disclosure is based, in part, on isolated nucleic acids and expression constructs encoding one or more transgenes such as inhibitory nucleic acids or codon optimized proteins, that inhibit the expression of the mutated ACVR1 gene, reduce heterotopic ossification and promote the expression of the wild type ACVR1 gene in a subject in need thereof.

Accordingly, in some aspects, the disclosure provides a recombinant adeno-associated virus (rAAV) comprising (i) an isolated nucleic acid comprising a transgene comprising a promoter operably linked to a codon optimized nucleic acid sequence encoding an ACVR1; and (ii) at least one AAV capsid protein.

In some aspects, the disclosure provides a recombinant adeno-associated virus (rAAV) comprising (i) at least one AAV capsid protein; and (ii) a nucleic acid that encodes an artificial miRNA (ami-RNA) comprising a nucleic acid having sufficient sequence complementary with an endogenous mRNA of a subject to hybridize with and inhibit expression of the endogenous mRNA, wherein the endogenous mRNA encodes an ACVR1 protein; and/or (iii) a nucleic acid that encodes a transgene comprising a codon optimized nucleic acid sequence encoding an ACVR1.

In some aspects, the disclosure provides a recombinant gene editing complex comprising: (i) a single guide RNA (sgRNA) that specifically hybridizes to a target nucleic acid sequence of an ACVR1 gene; (ii) a first rAAV particle encoding a first recombinant gene editing protein or fragment thereof; and (iii) a second rAAV particle encoding a second recombinant gene editing protein or fragment thereof.

In some embodiments, the isolated nucleic acid is positioned within a vector. In some embodiments, the promoter is a chicken beta-actin (CBA) promoter. In some embodiments, the CBA promoter comprises a CBA intron in the vector. In some embodiments, the CBA promoter comprises a MassBiologics novel (MBL) intron comprising a sequence as set forth in SEQ ID NO: 37. In some embodiments, the CBA promoter comprises a synthetic intron comprising a sequence as set forth in SEQ ID NO: 36 in the vector.

In some embodiments, the MBL intron reduces the size of the vector genome (e.g., relative to the size of a vector genome having a CBA promoter or the like). In some embodiments, the synthetic intron reduces the size of the vector genome. In some embodiments, the size of the vector genome is reduced by at least 15-25%.

In some embodiments, the intron is present between the promoter and the sequence of the transgene encoding the codon optimized ACVR1. In some embodiments, the codon optimized ACVR1 comprises a sequence as set for in SEQ ID NO: 1.

In some embodiments, the vector is a plasmid. In some embodiments, the vector is a bacmid. In some embodiments, the vector is a cosmid. In some embodiments, the vector is a viral, closed-ended linear DNA (ceDNA). In some embodiments, the vector is a Baculovirus vector. In some embodiments, the vector is an adeno-associated virus (AAV) vector.

In some embodiments, the transgene is flanked by AAV inverted terminal repeat (ITRs).

In some embodiments, the ACVR1 protein comprises a single base mutation of guanine to adenine at position 206 of the sequence of the wild type ACVR1. In some embodiments, the ACVR1 protein is human ACVR1-R206H. In some embodiments, the ami-RNA is encoded by the sequence set forth in any one of SEQ ID NOs: 5, 6 and 56-65.

In some embodiments, the vector is a plasmid. In some embodiments, the vector is a bacmid. In some embodiments, the vector is a cosmid. In some embodiments, the vector is a viral, closed-ended linear DNA (ceDNA). In some embodiments, the vector is a Baculovirus vector. In some embodiments, the vector is an adeno-associated virus (AAV) vector.

In some embodiments, the AAV vector comprises at least one inverted terminal repeat (ITR). In some embodiments, the ami-RNA comprises a human miRNA backbone. In some embodiments, the ami-RNA is a human miR-33 backbone.

In some embodiments, the isolated nucleic acid is positioned within a viral vector. In some embodiments, the viral vector is an adeno-associated virus (AAV) vector. In some embodiments, the AAV vector is encapsidated by a capsid protein selected from AAV1, AAV2, AAV3, AAV4, AAV5, AAV6, AAV6.2, AAV7, AAV8, AAVrh.8, AAV9, AAVrh.10, AAVrh39, and AAVrh.43. In some embodiments, the rAAV is a self-complementary AAV (scAAV).

In some embodiments, the ami-RNA and the transgene are operably linked to a promoter. In some embodiments, the promoter is a chicken beta-actin (CBA) promoter. In some embodiments, the CBA promoter comprises a CBA intron in the vector.

In some embodiments, the CBA promoter comprises a MassBiologics novel (MBL) intron comprising a sequence as set forth in SEQ ID NO: 37 in the vector. In some embodiments, the ACVR1 protein is a mutated protein having a single base mutation of guanine to adenine. In some embodiments, the ACVR1 protein is human ACVR1-R206H. In some embodiments, the isolated nucleic acid comprises the sequence set for in any one of SEQ ID NOs: 25-28.

In some embodiments, the ami-RNA comprises a human miRNA backbone. In some embodiments, the human miRNA backbone is a human miR-33 backbone.

In some embodiments, the ami-RNA and the transgene replace ACVR1-R206H with wild type ACVR1. In some embodiments, the present disclosure provides a vector comprising the sequence set for in any one of SEQ ID NOs: 25-28.

In some embodiments, the first recombinant gene editing protein comprises a Cas9-based adenine base editor (ABE) N-terminus portion and its fragments thereof.

In some embodiments, the second recombinant gene editing protein comprises a Cas9-based adenine base editor (ABE) C-terminus portion and its fragments thereof.

In some embodiments, the recombinant gene editing complex further comprises a protospacer adjacent motif. In some embodiments, the recombinant gene editing protein is a protein of the Crisper/Cas9 system. In some embodiments, the first and the second rAAV particles comprises an AAV9 capsid protein or variant thereof. In some embodiments, the first and the second rAAV particles comprises an AAV6.2 capsid protein or variant thereof.

In some embodiments, each of the N-terminal ABE construct and the C-terminal ABE construct is divided by using a trans-splicing intein sequence. In some embodiments, the N-terminal ABE construct comprises protospacer having the ACVR1-R206H mutation. In some embodiments, the C-terminal ABE construct is integrated into the AAV6.2 or AAV9 capsid protein. In some embodiments, the ABE converts adenine into guanine in the ACVR1-R206H allele.

The present disclosure provides a method of treating a subject having or suspected of having fibrodysplasia ossificans progressiva (FOP). In some embodiments, the method comprises administering to the subject the rAAV of (i) at least one AAV capsid protein; and (ii) a nucleic acid that encodes an artificial miRNA (ami-RNA) comprising a nucleic acid having sufficient sequence complementary with an endogenous mRNA of a subject to hybridize with and inhibit expression of the endogenous mRNA, wherein the endogenous mRNA encodes an ACVR1 protein; and/or (iii) a nucleic acid that encodes a transgene comprising a codon optimized nucleic acid sequence encoding an ACVR1.

In some embodiments, the subject comprises a nucleic acid sequence encoding a mutant ACVR1 protein. In some embodiments, the mutant ACVR1 protein is an ACVR1-R206H protein.

In some embodiments, the subject is a mammalian subject. In some embodiments, the mammalian subject is a human subject.

In some embodiments, the administration or delivery occurs by injection. In some embodiments, the injection is intravenous injection.

In some embodiments, the administration or delivery occurs by implantation of a tissue or graft comprising the rAAV as disclosed herein into the subject.

In some embodiments, the administration or delivery occurs by interdermal delivery of the rAAV as disclosed herein into the subject.

In some embodiments, the administration or delivery results in reduction of flare-up conditions in the subject.

BRIEF DESCRIPTION OF DRAWINGS

FIGS. 1A-1B show the mechanisms and signaling pathways that are involved in fibrodysplasia ossificans progressiva (FOP). FIG. 1A illustrates the schematic diagram showing FOP mutations. FIG. 1B shows the BMP/Activin A signaling pathway in normal subjects and FOP patients. Abbreviations: SP, signal peptide; LBD, ligand binding domain; TM, transmembrane; GS, gly-ser-rich domain.

FIGS. 2A-2B show the generation of AAV vector genome for gene addition. FIG. 2A shows a schematic diagram of plasmid construction. The CBA promoter is operably linked to chicken beta-actin intron, MBL intron, or synthetic intron. FIG. 2B shows validation of the expression of opt-ACVR1. Vector genomes were transiently transfected into HEK293 cells and cell lysates were subjected to immunoblotting with anti-ACVR1 antibody. Anti-Hsp90 antibody was used for loading control.

FIGS. 3A-3D show the generation of AAV vector genome for gene silencing. FIG. 3A is a schematic diagram showing 12 artificial miRNAs (amiRs) that target different sequence sites of human ACVR1-R206H miRNA (amiR-ACVR1.R206H) and amiR-sensor plasmids for human ACVR1-R206H, -WT (wild type), or -opt (optimized) (FIG. 3B). FIG. 3C shows that amiR-ctrl (control) or amiR-ACVR1.R206H were transiently transfected into HEK293 cells along with amiR-sensor plasmids and luciferase assay was performed to measure renilla and firefly activities. Lower ratio of renilla to firefly indicates higher silencing efficacy of amiRs. FIG. 3D depicts images showing that amiR-ctrl or amiR-ACVR1.R206H were transiently transfected into HEK293 and cell lysates were subjected to immunoblotting with anti-ACVR1 antibody. Anti-Hsp90 antibody was used for loading control. Abbreviations: Fluc, firefly luciferase; Rluc, renilla luciferase.

FIGS. 4A-4D show the generation of AAV vector genome for gene replacement. FIG. 4A is a schematic diagram of plasmid construction containing a synthetic intron (SEQ ID NO: 36) or an MBL intron (SEQ ID NO: 37), artificial miRNAs (amiRs; RH6 or RH7) ACVR1. FIG. 4B shows a graph measuring luciferase activity after a vector or four AAV vector genome (RH6 or RH7 with the synthetic intron and RH6 or RH7 with the MBL intron) was transiently transfected into HEK293 cells along with amiR-sensor plasmids and luciferase assay was performed to measure renilla and firefly activities. FIG. 4C shows opt-ACVR1 expression assessed by immunoblotting with anti-ACVR1 antibody. Anti-Hsp90 antibody was used for loading control. FIG. 4D shows a graph measuring BRE-luciferase activity after a vector control or AAV vector genome was transiently transfected into HEK293 cells along with BRE-luc reporter gene and treated with activin A (100 ng/ml). 24 hours later, activin A signaling activity was measured by luciferase assay. Values represent mean±SD: **, P<0.01 and ***, P<0.001 by an unpaired two-tailed Student's t-test or by one-way ANOVA test.

FIG. 5 shows the screening of rAAV serotypes effective for in vitro transduction of multiple cells. PBS (control) or 5×10¹⁰ GC of 14 different rAAV serotyptes (AAV1, AAV2, AAV3b, AAV4, AAV5, AAV6, AAV6.2, AAV7, AAV8, AAV9, AAV.rh8, AAV.rh10, AAV.rh39, and AAV.rh43 expressing EGFP were incubated with the indicated cells for 2 days and cultured under osteogenic conditions for 4 days. The transduction of AAV was assessed by GFP expression using epifluorescence microscopy. Scale bar: 400 μm.

FIGS. 6A-6D show that rAAV6.2 and rAAV9 transduce heterotopic bone-residing cells in the skeletal muscle. Four (FIGS. 6A and 6B) or eight (FIGS. 6C and 6D) days after rBMP2/7 injection and muscle injury, 5×10¹² vg/kg of rAAV6.2.egfp or rAAV9.egfp was intramuscularly injected into 2 month old male Tie2-cre;Ai9 mice (n=3), respectively. X-radiography of whole body (FIGS. 6A and 6C) and frozen-section of the affected tissues (FIGS. 6B and 6D) were performed in treated mice. The blue image corresponds to DAPI; The red image corresponds to Tie2+ cells; green image correspond to AAV-transduced cells. Abbreviations: M, muscle; HO-BM, heterotopic ossification bone marrow.

FIGS. 7A-7B show the generation of rAAV6.2 and rAAV9 vectors for gene replacement. FIG. 7A is a schematic diagram of the generation of rAAV vector, which contains MBL intron (SEQ ID NO: 37), rAAV6.2 or rAAV9, amiR-RH6 or amiR-RH7, and codon optimized ACVR1. FIG. 7B shows a gel image after electrophoresis to assess the genome integrity of rAAV6.2 containing amiR-RH6 or -RH7 after digestion. Abbreviation: ss, single-stranded.

FIGS. 8A-8K show in vitro functional validation of rAAV6.2 vectors for gene replacement. Human FOP-iPSCs were treated with 5×10¹⁰ GC of the vectors (rAAV6.2-amiR-ctrl, -amiRH6, or -amiRH7 in combination with either ACVR1-WT or ACVR1-R206H) for 2 days and cultured under osteogenic conditions for 4 days. Total RNA was subjected for cDNAs synthesis, followed by next generation sequencing (NGS) (FIG. 8A) or RT-PCR analysis (FIG. 8B). Alkaline phosphatase activity (ALP) (FIG. 8C) and alizarin red staining (FIG. 8D) were performed to assess osteoblast differentiation at 6 and 21 days of osteogenic culture, respectively. FIG. 8E shows that mRNA levels of osteoblast marker genes, including type 1 collagen (Col1a1) and bone sialoprotein (ibsp), were markedly reduced by rAAV6.2 carrying amiR-RH7 and opt-ACVR1, not by rAAV6.2 carrying amiR-RH6 and opt-ACVR1 or rAAV6.2.amiR-ctrl. Values represent mean±SD: **, P<0.01, ***, P<0.001 and ****, P<0.0001 by an unpaired two-tailed Student's t-test in all panels. FIG. 8F shows that 5×10¹⁰ GCs of tAAV6.2 vectors carrying ctrl, amiR-RH6.ACVR1^(opt), or amiR-RH7.ACVR1^(opt) were transduced to human FOP-iPSCs and cultured under osteogenic conditions for 4 days. Total RNA was subjected for cDNAs synthesis, followed by next generation sequencing (NGS) (top figure) or RT-PCR for ACVR1^(opt) mRNA expression (bottom figure). FIG. 8G shows that human FOP patient-derived iPSCs were treated with PBS or 5×10¹⁰ genome copies (GCs) of 14 different AAV capsids packaged with the same CBA-Egfp transgene. Two days later, EGFP expression was assessed by immunoblotting with an anti-GFP antibody. Anti-HSP90 antibody was used for loading control. FIG. 8H-8K show that 5×10¹⁰ GCs of AAV6.2 vectors carrying ctrl, amiR-RH6.ACVR1^(opt), or amiR-RH7.ACVR1^(opt) were transduced to human iPSCs derived from healthy donor (WT-iPSC) or FOP patient (R206H-iPSC). Osteogenic gene expression was assessed by RT-PCR (FIG. 8H). AAV-treated cells were incubated with PBS or activin A (100 ng/ml) for six hours and ID1 mRNA levels were measured by RT-PCR (FIG. 8I). FIG. 8J shows PDGFRa⁺Sca1⁺CD31⁻CD45⁻ fibroadipogenic progenitors (FAPs) were FACS sorted from the digested tibial muscle of 4 week old Acvr1^((R206H)Fl);PDGFRα mice and treated with 5×10¹⁰ GCs of the AAV6.2 vectors carrying ctrl, amiR-RH6.ACVR1^(opt), or amiR-RH7.ACVR1^(opt). Two days later, AAV-treated cells were cultured under osteogenic conditions with PBS or activin A (50 ng/ml) for six days and ALP activity was assessed for osteoblast differentiation (FIG. 8K). Values represent mean±SD: ns, non-significant; *. P<0.05; **, P<0.01; ***. P<0.001; ****, P<0.0001 by one-way ANOVA test.

FIG. 9 shows tissue distribution of systemically injected rAAV6.2 or rAAV9 in mice. 5×10¹³ vg/kg of rAAV6.2.egfp with or without vascular permeability (VP) agents or rAAV6 was intravenously injected into 2 month old male mice (n=3) and 2 weeks later, tissue distribution of vectors in brain, heart, lung, spleen, liver, kidney, and hindlimb was assessed by EGFP expression using IVIS-100 optical imaging system.

FIGS. 10A-10B show therapeutic effects of rAAV9 vectors in a mouse model of FOP. Three days after five consecutive injection of tamoxifen, six week old male ACVR1^((R206H)FIEx);ERT-Cre mice were intravenously injected with 5×10¹³ vg/kg of rAAV9 vectors (rAAV9 vector carrying amiR-RH6 and opt-ACVR1, rAAV9 vector carrying amiR-RH7 and opt-ACVR1, and rAAV9 vector carrying amiR and control). Ten weeks later, spontaneous heterotopic ossification (HO) was assessed by microCT. Representative 3D-reconstruction microCT images of treated mice (FIG. 10A, n=5) and HO sites were quantitated (FIG. 10B).

FIG. 11 illustrates schematic diagram showing plasmid constructions of a Cas9-based adenine base editor (ABE) for ACVR1-R206H editing. The C-terminal ABE construct (left image) is packaged into AAV6.2 or AAV9 capsid. The N-terminal ABE construct (right image) contains protospacer having the R206H mutation site.

FIG. 12 is a schematic diagram showing AAV-mediated treatment approach for FOP. The promoters, pBRE and pNF-κB, induce the expression of soluble follistatin (sFST) and TNFR2 in responsive to Activin A/BMP ligand and inflammation, respectively. Three days after intramuscular or intravenous injection of rAAV9 vectors, cardiotoxin-induced muscle injury will be executed in ACVR1^((R206H)FIEx);ERT-Cre mice to develop HO. Upregulation of activin A and TNF in the area of injury-induced flare-up in the skeletal muscle results in the production of soluble FST and TNFR2 that suppress activin A and TNF signaling in heterotopic bone. Abbreviations: pBRE, BMP-responsive element; pNF-κB, NF-κB-binding sites.

FIGS. 13A-13D show the generation of the AAV vector genome responding to inflammatory cytokines and/or bone morphogenetic protein (BMPs). FIG. 13A is a schematic diagram of plasmid construction having pBRE and pNF-kB promoters, ITRs, and Gaussia reporter gene. FIGS. 13B-13D show results after HEK293 cells were transiently transfected with either PB2-luc or AAV vector genome (eBRE/NF-κB-luc) and 24 hours later, cells were stimulated with different concentrations of TNF or IL-1p (FIG. 13B), BMP4 (FIG. 13C), or the combination (FIG. 13D). The responsiveness of the vectors was measured using luciferase assay. Values represent mean±SD: *, P<0.05, **, P<0.01, ***, and P<0.001 by an unpaired two-tailed Student's t-test in all panels.

FIGS. 14A-14B shows the generation of the AAV vector genome that produces soluble follistatin (FST-288) and TNFR2. FIG. 14A is a schematic diagram of plasmid constructions. FIG. 14B shows results after HEK293 cells were transfected with control vector or AAV vector genome encoding FST-288 and sTNFR2 and 48 hours later, the supernatant was harvested. Either PB2-luc or 3TP-lux was transfected into HEK293 cells and 24 hours later, the culture medium was changed with the fresh medium: harvested supernatant (1:1) that contains different concentrations of TNF or activin A. 24 hours later, luciferase assay was performed to assess TNF-induced NF-kB and activin A-induced SMAD activation. Values represent mean±SD: ns, not significant, *, P<0.05, **, P<0.01, ****, and P<0.0001 by an unpaired two-tailed Student's t-test in all panels.

FIGS. 15A-15D show AAV-gene therapeutics reverses enhanced osteogenesis by ACVR1-R206H mutation. FIG. 15A shows 5×10¹⁰ GC of AAV6.2 vectors carrying ctrl, amiR-RH6.optACVR1, or amiR-RH7.optACVR1 were transduced to human FOP-iPSCs for 2 days and cultured under osteogenic conditions for 4 days. Total RNA was subjected for cDNAs synthesis, followed by RT-PCR for Egfp expression. FIG. 15B shows total RNA was subjected for RNA sequencing and a volcano plot comparing the gene expression for up/downregulated genes in the cells expressing amiR-RH6.optACVR1 relative to amiR-RH7.optACVR1 was produced. FIG. 15C shows Sca1⁺PDGFRa⁺CD31⁻CD45⁻ fibroadipogenic progenitors (FAPs) were FACS sorted from tibial muscle of 4 week old Acvr1R^(206H);PDGFRa mice and treated with 5×10¹⁰ GC of the AAV6.2 vectors carrying ctrl, amiR-RH6.optACVR1, or amiR-RH7.optACVR1. Two days later, AAV-treated cells were cultured under osteogenic conditions with PBS or Activin A (50 ng/ml) for six days and osteogenic gene expression was assessed by RT-PCR. FIG. 15D shows that a volcano plot showing the gene expression for upregulated and downregulated genes in the cells expressing amiR-RH6.ACVR1^(opt) or amiR-RH7.ACVR1^(opt) relative to ctrl-expressing cells was displayed.

FIGS. 16A-16C show effects of AAV-gene therapeutics on Activin A-induced osteogenesis in vitro. FIG. 16A shows primary bone marrow-derived stromal cells (BMSCs) were isolated from 4 week old Acvr1R^(206H);Prx1 femurs and treated with 5×10¹⁰ GC of the AAV6.2 vectors carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1. Two days later, AAV-treated cells were cultured under osteogenic conditions for four days, stimulated with Activin A (100 ng/ml) for 6 or 24 hours and expression of Activin A-responsive genes Id1 and Msx2 was assessed using RT-PCR, respectively. FIGS. 16B-16C show AAV-treated cells were cultured under osteogenic conditions with PBS or Activin A (50 ng/ml), and ALP (FIG. 16B) and alizarin red staining (FIG. 16C) were performed to assess osteoblast differentiation at 6 and 12 days of osteogenic culture, respectively.

FIGS. 17A-17I show effects of AAV-gene therapeutics on Activin A signaling and traumatic heterotopic ossification. FIGS. 17A-17D show primary bone marrow-derived stromal cells (BMSCs) were isolated from 4 week old Acvr1R^(206H);Prx1 femurs and treated with 5×10¹⁰ GC of the AAV6.2 vectors carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1. Two days later, AAV-treated cells were cultured under osteogenic conditions for four days and Acvr1^(R206H) and optAcvr1 mRNA levels were measured by RT-PCR (FIG. 17A). AAV-treated cells were stimulated with Activin A (100 ng/ml) for 30 min and immunoblotted for phospho-Smad1/5. Anti-Gapdh antibody was used for loading control (FIG. 17B). AAV-treated cells were cultured under osteogenic conditions with PBS or Activin A (50 ng/ml), and ALP (FIG. 17C, left) and alizarin red staining (FIG. 17C, right) were performed to assess osteoblast differentiation at 6 and 12 days of osteogenic culture, respectively. AAV-treated cells were cultured under osteogenic conditions with PBS or BMP4 (50 ng/ml) for 12 days, and alizarin red staining (FIG. 17C, right) was performed for mineralization (FIG. 17D). FIG. 17E shows 5×10¹² vg/kg of rAAV9 expressing EGFP was intradermally (i.d.) injected into the femoral muscle of 2 month old male Tie2-cre;Ai9 mice (n=3) one week after rBMP2/7-matrigel injection and muscle injury, and X-radiography of hindlimbs (left top) and frozen-section of HO tissues (left bottom, right) were performed in treated mice. Box indicates HO in the skeletal muscle. M, muscle; HO-BM, heterotopic ossification bone marrow. Blue, DAPI; Red, Tie2⁺ cells; Green, AAV-transduced cells. FIGS. 17F-17G show 5×10¹² vg/kg of rAAV9 expressing vector or CRE recombinase was i.d. injected into the tibial muscle of 6 week old female Acvr1R²⁰¹;Cre-ER^(T2) mice (n=8) and two days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites. Four weeks later, Acvr1^(R206H) and CRE recombinase mRNA levels in the tibial muscle were measured by RT-PCR (FIG. 17F) and HO in the tibial muscle was assessed using X-radiography and microCT. 3D reconstruction images (FIG. 17G, left) and quantification of HO volume are displayed (FIG. 17G, right). FIG. 17H shows 5×10¹² vg/kg of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 was i.d. injected into the tibial muscle of 6 week old male Acvr1R^(206H); Cre-ER^(T2) mice (n=8) two days after five times intraperitoneal (i.p.) injection of tamoxifen (10 mg/kg). Two days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites and four weeks later, and HO in the tibial muscle was assessed using microCT. 3D reconstruction images (left) and quantification of HO volume is displayed (right). FIG. 17I shows 5×10¹² vg/kg of rAAV9 expressing ctrl or amiR-RH6.optACVR1 was i.d. injected into the femoral muscle of 2 month old male wildtype mice (n=5) and two days later, rBMP2/7-matrigel injection and muscle injury were employed into the injection sites. Four weeks later, HO in the femoral muscle was assessed using X-radiography and microCT. 3D reconstruction images (left) and quantification of HO volume is displayed (right).

FIGS. 18A-18F show assessment of traumatic heterotopic ossification in AAV-treated skeletal muscle. FIGS. 18A-18B show a diagram of the study and treatment design. 5×10¹² vg/kg of rAAV6.2 expressing EGFP was i.d. injected into the femoral muscle of 2 month old male wildtype mice (n=3) one week after rBMP2/7-matrigel injection and muscle injury, and X-radiography of hindlimbs (FIG. 18B, left) and frozen-section of HO tissues (FIG. 18B, right) were performed in treated mice. Box indicates HO in the skeletal muscle. FIGS. 18C-18D show a diagram of additional study and treatment designs. FIG. 18E shows 5×10¹² vg/kg of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 was i.d. injected into the tibial muscle of 6 week old male Acvr1R206H;Cre-ERT2 mice (n=8) Three days after five times intraperitoneal (i.p.) injection of tamoxifen (10 mg/kg). Three days later, pinch injury and 1 μM cardiotoxin were employed into the injection sites and four weeks later, and Acvr1R206H and optAcvr1 mRNA levels were measured by RT-PCR (right). FIG. 18F shows a diagram of an additional study and treatment design.

FIGS. 19A-19F show systemic delivery of AAV-gene therapeutics prevents traumatic heterotopic ossification in adult FOP mice. FIGS. 19A-19B show P1 PDGFRa-GFP neonates (n=3) were treated with 10¹¹ GC of rAAV9 expressing mCherry via facial vein injection and two weeks later, tissue distribution of vectors was assessed by mCherry expression using IVIS-100 optical imaging system (FIG. 19A) or frozen section of AAV-treated hindlimbs (FIG. 19B). BM: bone marrow. FIGS. 19C-19E show P1 Acvr1R^(206H);Cre-ER^(T2) neonates (n=10) were treated with 10¹¹ GC of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 via facial vein injection, and six weeks later, mice were treated five times with i.p. injection of tamoxifen (10 mg/kg). Two days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites and four weeks later, and Acvr1^(R206H) and optAcvr1 mRNA levels were measured by RT-PCR (FIG. 19C). HO in the tibial muscle was assessed using microCT or histology. 3D reconstruction images (FIG. 19D, left) and quantification of HO volume is displayed (FIG. 19D, right). FIG. 19E shows representative histology data. FIG. 19F shows P1 Acvr1R^(206H);Cre-ER^(T2) neonates (n=3) were treated with 10¹¹ GC of rAAV9 carrying ctrl or amiR-RH6.optACVR1 via facial vein injection, and six weeks later, mice were treated five times with i.p. injection of tamoxifen (10 mg/kg). Three days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites and 3, 7, 14, 28 days later, HO in the tibial muscle was assessed by X-radiography. Boxes indicate HO in the tibial muscle.

FIGS. 20A-20G show systemic delivery of AAV-gene therapeutics prevents traumatic heterotopic ossification. FIG. 20A shows a diagram of study and treatment design. FIGS. 20B-20C show P1 PDGFRα-GFP neonates (n=3) were treated with 10¹¹ GC of rAAV9 expressing mCherry via facial vein injection and two weeks later, PDGFRα expression was assessed by IVIS-100 optical imaging system using GFP expression (FIG. 20B). AAV-transduced cells in the hindlimbs were also assessed by mCherry expression in the hindlimbs using fluorescence microscopy. IVIS-100 optical imaging system (FIG. 20B) or frozen section of AAV-treated hindlimbs (FIG. 20C). BM: bone marrow. FIG. 20D shows P1 wildtype neonates (n=3) were treated with 10¹¹ GC of rAAV9 expressing LacZ via facial vein injection and two weeks later, frozen-sections of AAV-transduced tissues were stained for X-galactosidase. BM: bone marrow, CB: cortical bone, M: muscle. FIG. 20E shows that P1 PDGFRα-GFP neonates (n=3) were treated with 10¹¹ GCs of rAAV9 expressing mCherry via facial vein injection and two weeks later, PDGFRα expression was assessed by IVIS-100 optical imaging system using GFP expression. FIG. 20F shows a diagram of a study and treatment methods design. FIG. 20G shows a diagram of a study and treatment methods design.

FIGS. 21A-21J show systemic delivery of AAV-gene therapeutics prevents chronic heterotopic ossification in adult FOP mice. FIG. 21A shows 5×10¹³ vg/kg of rAAV9 carrying ctrl or amiR-RH6.optACVR1 was i.v. injected into 6 week old Acvr1R^(206H);Cre-ER^(T2) mice (n=10) three days after five times consecutive i.p. injection of tamoxifen (10 mg/kg). Ten weeks later, Acvr1^(R206H) and optACVR1 mRNA levels in the liver were assessed by RT-PCR. MicroCT analysis of whole body (FIG. 21B), torso (FIG. 21C), and lower body (FIG. 21D) demonstrates that AAV-mediated expression of amiR-RH6.optACVR1 prevents chronic HO in Acvr1R^(206H);PDGFRa-Cre mice. Arrows indicate HO areas. Total HO volume (FIG. 21E) and number of HO areas (FIG. 21F) in whole body were quantitated. Percentage of clinical HO incidence was assessed (FIG. 21G). MicroCT and histology of knee joints were performed to assess heterotopic bone (FIG. 21H, left and middle), degeneration of articular cartilage (FIG. 21H, middle), and growth plate (FIG. 21H, right). Boxes indicate HO areas and articular cartilage and growth plate. Frequency of immune cells within the population of total splenocytes indicate little to no effects of AAV vectors on systemic immune responses (n=6˜8, FIG. 21H). FIG. 21J show MicroCT and histology images of degeneration of articular cartilage (left image), and growth plate (right image).

FIGS. 22A-22F show systemic delivery of AAV-gene therapeutics prevents chronic heterotopic ossification in adult FOP mice. FIG. 22A shows a diagram of a study and treatment design. FIG. 22B shows 5×10¹³ vg/kg of rAAV9 expressing mCherry was i.v. injected into 6 week old Acvr1R206H;Cre-ERT2 mice (n=3) three days after five times consecutive i.p. injection of tamoxifen (10 mg/kg). mCherry expression in individual tissues was monitored by IVIS-100 optical imaging two weeks post-injection. FIGS. 22C-2F show 5×10¹³ vg/kg of rAAV9 carrying ctrl or amiR-RH6.optACVR1 was i.v. injected into 6 week old Acvr1R206H;Cre-ERT2 mice (n=10) three days after five times consecutive i.p. injection of tamoxifen (10 mg/kg). Ten weeks later, the movements of 16 week old AAV-treated mice, including Acvr1R206H (ctrl) mouse with normal locomotion. Acvr1R206H;Cre-ERT2 (ctrl) mouse with slow locomotion, and Acvr1R206H;Cre-ERT2 (amiR-RH6.optACVR1) mouse with normal locomotion. Arrow indicates amiR-RH6.optACVR1-treated mouse (FIG. 22C). FIG. 22D shows the heterotopic bone near knee joints. FIG. 22E shows H&E staining of the longitudinal sections of the AAV-treated spleens. FIG. 22F shows frequency of monocytes, macrophages, and neutrophils within the population of total splenocytes (n=6-8).

FIG. 23 shows effects of AAV-gene therapeutics on tissue histopathology in adult FOP mice. 5×10¹³ vg/kg of rAAV9 carrying ctrl or amiR-RH6.optACVR1 was i.v. injected into 6 week old Acvr1R206H;Cre-ERT2 mice (n=3) three days after five times consecutive i.p. injection of tamoxifen (10 mg/kg). Ten weeks later, H&E staining in lung, liver, kidney, heart, and skeletal muscle was performed to assess tissue histopathology (n=3).

FIGS. 24A-24H show systemic delivery of AAV-gene therapeutics prevents chronic heterotopic ossification in juvenile FOP mice. FIG. 24A shows 5×10¹³ vg/kg of rAAV9 expressing LacZ was i.v. injected into 3 week old Acvr1R^(206H);PDGFRa-Cre mice (n=3) and two weeks later, X-radiography of whole body was performed to locate HO sites (top). Frozen-sections of HO tissues were stained for X-galactosidase (bottom). Boxes indicate HO tissues. FIGS. 24B-24H show P1 Acvr1R^(206H);PDGFRa-Cre neonates (n=12) were treated with 10¹¹ GC of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 via facial vein injection. Survival (FIG. 24B) and body weight (FIG. 24C) of AAV-treated mice were weekly analyzed from the age of three weeks old to eight weeks old. MicroCT analysis of 5 week old AAV-treated skulls shows the ability of AAV vectors to reverse jaw ankylosis of Acvr1R^(206H);PDGFRa-Cre mice (FIGS. 24D-24E). Images of 3D reconstruction (FIG. 24D, top) and 2D transverse section (FIG. 24D, bottom) and distance of open mouth (FIG. 24E) are displayed. Arrows indicate the areas of temporomandibular joint ankylosis. MicroCT analysis of maxillary and mandibular bones demonstrates that AAV-mediated expression of amiR-RH6.optACVR1 reverses low bone mass of Acvr1R^(206H);PDGFRa-Cre mice (FIGS. 24F-24G). MicroCT analysis showed maxillary and mandibular bones of AAV-treated mice. 2D cross (FIG. 24F) and transverse (FIG. 24G) section images are displayed. Arrows indicate dental root bones. MicroCT analysis of whole body shows the ability of AAV vectors to prevent chronic HO in Acvr1R^(206H);PDGFRa-Cre mice (FIG. 24H). MicroCT analysis showed a whole body of AAV-treated mice. Images of 3D reconstruction (FIG. 24H, left) and 2D transverse section (FIG. 24H, right) are displayed.

FIGS. 25A-25B show systemic delivery of AAV9 is effective for the transduction of HO tissues in juvenile FOP mice. FIG. 25A shows Alcian blue staining of HO tissues in 5 week old Acvr1R206H;PDGFRα-Cre mice (n=3). FIG. 25B shows 5×10¹³ vg/kg of rAAV9 expressing LacZ was i.v. injected into 3 week old Acvr1R206H;PDGFRα-Cre mice (n=3) and two weeks later, X-radiography of whole body was performed to locate HO sites. Frozen-sections of HO tissues were stained for X-galactosidase.

FIGS. 26A-26B show systemic delivery of AAV-gene therapeutics prevents chronic heterotopic ossification in juvenile FOP mice. FIG. 26A shows P1 Acvr1R^(206H);PDGFRa-Cre neonates (n=12) were treated with 10¹¹ GC of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 via facial vein injection. Movements of 5 week old AAV-treated mice, including normal sized Acvr1R^(206H) mouse (ctrl), small sized Acvr1R^(206H);PDGFRa-Cre mouse (ctrl), and normal sized Acvr1R^(206H);PDGFRa-Cre mouse (amiR-RH6.optACVR1), are shown. FIG. 26B shows X-radiography showing whole body of 5 week old AAV-treated mice.

FIGS. 27A-27D show systemic delivery of AAV-gene therapeutics prevents jaw ankylosis in juvenile FOP mice. P1 Acvr1R^(206H);PDGFRa-Cre neonates (n=12) were treated with 10¹¹ GC of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 via facial vein injection. FIG. 27A shows photography demonstrating the ability of 5 week old AAV-treated mice to open mouth. FIG. 27B shows photography showing individual tissues of 5 week old AAV-treated mice demonstrates that AAV-mediated expression of optACVR1 or amiR-RH6.optACVR1 prevents a decay of Acvr1R^(206H);PDGFRa-Cre intestines by starvation. FIG. 27C shows that frozen section of mandibular bones of 2-month-old PDGFRa-GFP mice (n=3) was assessed for PDGFRa expression in the root of alveolar bone by fluorescence microscopy. DAPI: nucleus staining. FIG. 27D shows MicroCT analysis showing 2D sagittal-section images maxillary and mandibular bones of AAV-treated mice. Arrows indicate roots of alveolar bones in the teeth.

FIGS. 28A-28C show modification of the AAV vector genome to control the expression of therapeutic genes. FIG. 28A shows a schematic diagram of plasmid construction. CMV enhancer/chicken p-actin promoter (CBA), MBL intron (MBLi), β-globin polyA sequence (PA), and inverted terminal repeat (TR). miR-122: liver-specific miRNA, miR-208a: cardiac muscle-specific miRNA, TS: target sequence. miR-122/miR208a-TS is used to repress AAV's expression in the liver and heart. EndoID1-BRE: BMP-responsive elements. pNF-kB: inflammation-responsive elements. The promoter containing EndoID1-BRE/pNF-kB is used to induce AAV's expression in response to BMPs, activin A. and/or pro-inflammatory cytokines. FIG. 28B shows a schematic diagram of plasmid construction. FIG. 28C shows 6 week old wildtype mice were treated with i.v. injection of PBS or 5×10¹³ vg/kg of rAAV9.egfp or rAAV9.egfp.MIR-TS and two weeks later, tissue distribution of AAV vectors were monitored by IVIS-100 optical imaging system using EGFP expression.

FIGS. 29A-29C show systemic delivery of AAV-gene therapeutics prevents traumatic HO in adult FOP mice. P1 Acvr1R^(206H);Cre-ER^(T2) neonates (n=10) were treated with 10¹¹ GCs of rAAV9 carrying ctrl, amiR-RH6, ACVR1^(opt), or amiR-RH6.ACVR1^(opt) via facial vein injection, and six weeks later, mice were i.p. injected with tamoxifen (10 mg/kg). Two days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites. Heterotopic bone in the tibial muscle was assessed using microCT or histology. 3D reconstruction images (FIG. 29A, top figure) of HO volume is displayed. P1 Acvr1R^(206H);Cre-ER^(T2) neonates (n=3) treated with 10¹¹ GCs of rAAV9 carrying ctrl or amiR-RH6.ACVR1^(opt) were aged to 6 week old and i.p. injected with tamoxifen. Three days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites. 7, 14, and 28 days later, HO in the tibial muscle was assessed by histology (FIG. 29B). Longitudinal section of the injured areas at day 3 was immunostained for F4/80 (FIG. 29C).

FIGS. 30A and 30B show generate AAV vector genome for gene replacement, silencing, and the combination. FIG. 30A shows schematic diagram of mammalian expression vectors (pcDNA6, pAAV) that encode human ACVR1^(R206H), ACVR1^(WT), or ACVR1^(opt) cDNA. FIG. 30B shows control or four combination vectors were transiently transfected into HEK293 cells along with plasmids expressing human ACVR1^(R206H), ACVR1^(WT), or ACVR1^(opt) and human ACVR1 mRNA levels were assessed by RT-PCR.

FIG. 31 shows effects of AAV gene therapeutics on activin A-induced osteogenesis in vitro. 5×10¹⁰ GCs of the AAV6.2 vectors carrying ctrl, amiR-RH6.ACVR1^(opt), or amiR-RH7.ACVR1^(opt) were transduced to human iPSCs and two days later, cells were incubated with PBS or activin A (100 ng/ml) for six hours and MSX2 mRNA levels were measured by RT-PCR and normalized to HPRT.

FIGS. 32A-32E show biodistribution of rAAV6.2 or rAAV9 in mice. 5×10¹³ vg/kg of rAAV6.2.egfp alone (FIG. 32A) or together with vascular permeability agents (VP, human VEGF-166+sodium heparin+serum albumin. FIG. 32B) was i.v. injected into 2-month-old male mice (n=3) and two weeks later, tissue distribution of vectors was assessed by EGFP expression using IVIS-100 optical imaging system. FIG. 32C shows that 5×10¹³ vg/kg of rAAV9.egfp was i.v. injected into 2-month-old male mice (n=3) and two weeks later, tissue distribution of vectors was assessed by EGFP expression using IVIS-100 optical imaging system. FIGS. 32D and 32E show 5×10¹² vg/kg of rAAV9 expressing mCherry was interdermally (i.d.) injected into the tibial muscle of 2-month-old male wildtype mice (n=3). Two weeks later, tissue distribution of vectors was assessed by mCherry expression using IVIS-100 optical imaging system (FIG. 32D) or frozen section of AAV-treated hindlimbs (FIG. 32E).

DETAILED DESCRIPTION

Aspects of the disclosure relate to methods and compositions for treating fibrodysplasia ossificans progressiva (FOP) and the flare-up conditions. The disclosure is based, in part, on compositions (e.g., isolated nucleic acids, vectors, rAAVs, etc.) that reduce the expression of the mutated activin A type 1 receptor (ACVR1). In some embodiments, the compositions as disclosed herein (AAV-mediated gene transfer platforms) at least inhibit heterotopic ossification and/or the flare-up conditions when delivered to the affected tissues with abnormal bone formation, such as skeletal muscles, tendons, and cartilage in a subject, for example, by inducing activin A antagonist and/or TNF antagonist. Accordingly, methods and compositions described by the disclosure are useful, in some embodiments, for the treatment of diseases and disorders associated with FOP.

Isolated Nucleic Acids

Compositions and methods for delivering a transgene (e.g. an inhibitory RNA, such as an shRNA, miRNA, etc.) to a subject are provided in the disclosure. The compositions typically comprise an isolated nucleic acid encoding a transgene (e.g., a protein, an inhibitory nucleic acid, etc.) capable of modulating bone metabolism and/or treating FOP. For example, in some embodiments, a transgene reduces expression of a target protein, such as a target protein associated with promoting bone formation.

In some embodiments, an isolated nucleic acid, a vector, a recombinant gene editing complex or an rAAV as described by the disclosure comprises a transgene encoding at least one codon optimized ACVR1 (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or more codon optimized ACVR1). In some embodiments, codon optimized ACVR1 is a wild type ACVR1. In some embodiments, the codon composition of the recombinant ACVR1 gene can be improved or optimized without altering the amino acid sequence of ACVR1. In some embodiments, the codon optimized ACVR1 is a competitive inhibitor of ACVR1-R206H. without wishing to be bound by any theory, the codon optimized ACVR1 competes with the mutated ACVR1, such as ACVR1-R206H, for the binding.

In some embodiments, the codon optimized ACVR1 comprises a sequence as set for in SEQ ID NO: 1. In some embodiments, vector constructs comprising the codon optimized ACVR1 comprises a sequence as set for in SEQ ID NOs: 2-4. In some embodiments, rAAV-mediated gene transfer carrying a codon optimized ACVR1 is a gene addition platform. In some embodiments, the codon-optimized, wild type human ACVR1 cDNA is about 1.5 kb in size (FIG. 2 ).

In some embodiments, the transgene is operably linked to a promoter. In some embodiments, the promoter is a chicken beta-actin (CBA) promoter. In some embodiments, the promoter can be any promoter that is suitable for inducing the expression of the codon optimized ACVR1. In some embodiments, the CBA promoter comprises a CBA intron in the vector. In some embodiments, the CBA promoter comprises a MassBiologics novel (MBL) intron (e.g., SEQ ID NO: 37) in the vector. In some embodiments, the CBA promoter comprises a synthetic intron in the vector. In some embodiments, the CBA intron can be substituted by a MBL intron or a synthetic intron. Without wishing to be bound by any theory, a synthetic intron, in part, can be substituted with an endogenous intron and lead to enhanced mRNA production. In some embodiments, the CBA promoter can comprise any promoter that is suitable for vector constructs designed for the codon optimized ACVR1. In some aspects, the use of MBL intron and/or the synthetic intron reduces the size of the vector genome, preferably reduced by at least 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, or 25%. In some embodiments, the transgene is flanked by AAV inverted terminal repeat (ITRs).

In some embodiments, an isolated nucleic acid, a vector, or an rAAV encodes one or more (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or more) inhibitory nucleic acids, for example dsRNA, siRNA, shRNA, miRNA, artificial microRNA (ami-RNA), etc.). Generally, an inhibitory nucleic acid specifically binds to (e.g., hybridizes with) at least two (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, or more) continuous bases of a gene encoding a gene product (e.g., a protein) associated with FOP (e.g., ACVR1). As used herein “continuous bases” refers to two or more nucleotide bases that are covalently bound (e.g., by one or more phosphodiester bond, etc.) to each other (e.g. as part of a nucleic acid molecule). In some embodiments, the at least one inhibitory nucleic acid is about 50%, about 60% about 70% about 80% about 90%, about 95%, about 99% or about 100% identical to the two or more (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, or more) continuous nucleotide bases of a gene encoding a gene product (e.g., a protein) associated with FOP (e.g., ACVR1).

A “microRNA” or “miRNA” is a small non-coding RNA molecule capable of mediating transcriptional or post-translational gene silencing. Typically, miRNA is transcribed as a hairpin or stem-loop (e.g., having a self-complementarity, single-stranded backbone) duplex structure, referred to as a primary miRNA (pri-miRNA), which is enzymatically processed (e.g., by Drosha, DGCR8, Pasha, etc.) into a pre-miRNA. The length of a pri-miRNA can vary. In some embodiments, a pri-miRNA ranges from about 100 to about 5000 base pairs (e.g., about 100, about 200, about 500, about 1000, about 1200, about 1500, about 1800, or about 2000 base pairs) in length. In some embodiments, a pri-miRNA is greater than 200 base pairs in length (e.g., 2500, 5000, 7000, 9000, or more base pairs in length.

Pre-miRNA, which is also characterized by a hairpin or stem-loop duplex structure, can also vary in length. In some embodiments, pre-miRNA ranges in size from about 40 base pairs in length to about 500 base pairs in length. In some embodiments, pre-miRNA ranges in size from about 50 to 100 base pairs in length. In some embodiments, pre-miRNA ranges in size from about 50 to about 90 base pairs in length (e.g., about 50, about 52, about 54, about 56, about 58, about 60, about 62, about 64, about 66, about 68, about 70, about 72, about 74, about 76, about 78, about 80, about 82, about 84, about 86, about 88, or about 90 base pairs in length).

Generally, pre-miRNA is exported into the cytoplasm, and enzymatically processed by Dicer to first produce an imperfect miRNA/miRNA* duplex and then a single-stranded mature miRNA molecule, which is subsequently loaded into the RNA-induced silencing complex (RISC). Typically, a mature miRNA molecule ranges in size from about 19 to about 30 base pairs in length. In some embodiments, a mature miRNA molecule is about 19, about 20, about 21, about 22, about 23, about 24, about 25, about 26, about 27, about 28, about 29, or 30 base pairs in length.

In some aspects, the disclosure provides isolated nucleic acids, vectors (e.g., rAAV vectors) that encode one or more artificial miRNAs. As used herein “artificial miRNA” or “amiRNA” refers to an endogenous pri-miRNA or pre-miRNA (e.g., a miRNA backbone, which is a precursor miRNA capable of producing a functional mature miRNA), in which the miRNA and miRNA* (e.g., passenger strand of the miRNA duplex) sequences have been replaced with corresponding amiRNA/amiRNA* sequences that direct highly efficient RNA silencing of the targeted gene, for example as described by Eamens et al. (2014), Methods Mol. Biol. 1062:211-224. For example, in some embodiments an artificial miRNA comprises a miR-33 pri-miRNA backbone into which a sequence encoding a bone metabolism modulating (e.g., bone formation inhibiting agent) miRNA has been inserted in place of the endogenous miR-33 mature miRNA-encoding sequence. In some embodiments, miRNA (e.g., an artificial miRNA) as described by the disclosure comprises a miR-33 backbone sequence.

In some embodiments, the vector is a plasmid, bacmid, cosmid, viral, closed-ended linear DNA (ceDNA), or Baculovirus vector.

In some embodiments, the present disclosure provides an isolated nucleic acid comprising a transgene encoding an artificial miRNA targeting the AVCR1 gene, which encodes the ACVR1 protein. ACVR1 (ALK2) is a type 1 BMP receptor that contains extracellular ligand binding domain (LBD), transmembrane domain (TM), a glycine-serine-rich domain (GS) and serine/threonine kinase domain. An autosomal dominant mutation in ACVR1 leads to the development of FOP, a monogenic skeletal rare disease. The majority of the FOP patients carry the classical single point mutation (ACVR1-R206H, G>A), which results in spontaneous activation of bone morphogenic protein (BMP) signaling pathways. Without wishing to be bound by any theory, activin A is also identified as a ligand for ACVR1 in FOP. Under normal conditions, activin A binding to the wild type ACVR1 receptor leads to TGF-β signaling through the SMAD2/3 pathway, which functions as a competitive inhibitor of BMP signaling at the wild type ACVR1. When the ACVR1 is mutated, Activin A binding to the ACVR1-R206H receptor activates BMP signaling through the SMAD1/5/9 pathway, resulting in bone formation.

In some aspects, the disclosure relates to an isolated nucleic acid comprising a transgene encoding an artificial microRNA is used to reduce ACVR1 expression. In some embodiments, the artificial microRNA is used to inhibit ACVR1 expression. In some embodiments, the ACVR1 is mutated. In some embodiments, at least one, at least two, at least three, at least four, at least five, at least six, at least seven, at least eight, at least nine, at least ten, at least eleven, at least twelve, at least thirteen mutations ACVR1 mutations are identified that are associated with FOP (FIG. 1A). In some embodiments, the ACVR1 carries a single point mutation (ACVR1-R206H, G>A). In some embodiments, the ACVR1 mutation is human ACVR1-R206H. Without wishing to be bound by any theory, approximately 97% of FOP patients bear an autosomal dominant mutation (G>A) in the ACVR1 gene with an arginine to histidine substitution at position 206 (R206H, G>A) (FIG. 1A). In some embodiments, the promoter as used in the vector construct for the microRNA is a chicken beta-actin (CBA) promoter. In some embodiments, the promoter as used in the vector construct for the microRNA can be any promoter suitable for the expression of the microRNA.

In some embodiments, an artificial microRNA targets (e.g., binds to, or comprises a region of complementarity with) at least 6 continuous nucleotides of an ACVR1 gene. In some embodiments, an artificial microRNA targets (e.g., binds to, or comprises a region of complementarity with) between 6 and 30 continuous nucleotides of an ACVR1 gene. In some embodiments, an artificial microRNA targets between 12-24 continuous nucleotides of an ACVR1 gene. In some embodiments, an artificial microRNA targets between 9-27 continuous nucleotides of the ACVR1 gene. In some embodiments, an artificial microRNA targets at least 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 continuous nucleotides of an ACVR1 gene.

In some embodiments, an artificial microRNA is between 6-50 nucleotides in length. In some embodiments, an artificial microRNA is between 8-24 nucleotides in length. In some embodiments, an artificial microRNA is between 12-36 nucleotides in length. In some embodiments, an artificial microRNA is 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, or 50 nucleotides in length.

In some embodiments, an isolated inhibitory nucleic acid such as an artificial microRNA decreases expression of a target gene by between 50% and 99% (e.g., any integer between 50% and 99%, inclusive). In some aspects, an isolated inhibitory nucleic acid such as an artificial microRNA decreases expression of a target gene by between 75% and 90%. In some aspects, an isolated inhibitory nucleic acid such as an artificial microRNA decreases expression of a target gene by between 80% and 99%. In some embodiments, an isolated inhibitory nucleic acid such as an artificial microRNA decreases expression of an ACVR1 gene by between 50% and 99% (e.g., any integer between 50% and 99%, inclusive). In some embodiments, an isolated inhibitory nucleic acid such as an artificial microRNA decreases expression of an ACVR1 gene by between 75% and 90%. In some aspects, an isolated inhibitory nucleic acid such as an artificial microRNA decreases expression of an ACVR1 gene by between 80% and 99%.

A region comprising a transgene (e.g., a second region, third region, fourth region, etc.) may be positioned at any suitable location of the isolated nucleic acid. The region may be positioned in any untranslated portion of the nucleic acid, including, for example, an intron, a 5′ or 3′ untranslated region, etc.

In some cases, it may be desirable to position the region (e.g., the second region, third region, fourth region, etc.) upstream of the first codon of a nucleic acid sequence encoding a protein (e.g., a protein coding sequence). For example, the region may be positioned between the first codon of a protein coding sequence) and 2000 nucleotides upstream of the first codon. The region may be positioned between the first codon of a protein coding sequence and 1000 nucleotides upstream of the first codon. The region may be positioned between the first codon of a protein coding sequence and 500 nucleotides upstream of the first codon. The region may be positioned between the first codon of a protein coding sequence and 250 nucleotides upstream of the first codon. The region may be positioned between the first codon of a protein coding sequence and 150 nucleotides upstream of the first codon.

In some cases (e.g., when a transgene lacks a protein coding sequence), it may be desirable to position the region (e.g., the second region, third region, fourth region, etc.) upstream of the poly-A tail of a transgene. For example, the region may be positioned between the first base of the poly-A tail and 2000 nucleotides upstream of the first base. The region may be positioned between the first base of the poly-A tail and 1000 nucleotides upstream of the first base. The region may be positioned between the first base of the poly-A tail and 500 nucleotides upstream of the first base. The region may be positioned between the first base of the poly-A tail and 250 nucleotides upstream of the first base. The region may be positioned between the first base of the poly-A tail and 150 nucleotides upstream of the first base. The region may be positioned between the first base of the poly-A tail and 100 nucleotides upstream of the first base. The region may be positioned between the first base of the poly-A tail and 50 nucleotides upstream of the first base. The region may be positioned between the first base of the poly-A tail and 20 nucleotides upstream of the first base. In some embodiments, the region is positioned between the last nucleotide base of a promoter sequence and the first nucleotide base of a poly-A tail sequence.

In some cases, the region may be positioned downstream of the last base of the poly-A tail of a transgene. The region may be between the last base of the poly-A tail and a position 2000 nucleotides downstream of the last base. The region may be between the last base of the poly-A tail and a position 1000 nucleotides downstream of the last base. The region may be between the last base of the poly-A tail and a position 500 nucleotides downstream of the last base. The region may be between the last base of the poly-A tail and a position 250 nucleotides downstream of the last base. The region may be between the last base of the poly-A tail and a position 150 nucleotides downstream of the last base.

It should be appreciated that in cases where a transgene encodes more than one miRNA, each miRNA may be positioned in any suitable location within the transgene. For example, a nucleic acid encoding a first miRNA may be positioned in an intron of the transgene and a nucleic acid sequence encoding a second miRNA may be positioned in another untranslated region (e.g., between the last codon of a protein coding sequence and the first base of the poly-A tail of the transgene).

In some embodiments, the transgene further comprises a nucleic acid sequence encoding one or more expression control sequences (e.g., a promoter, etc.). Expression control sequences include appropriate transcription initiation, termination, promoter and enhancer sequences; efficient RNA processing signals such as splicing and polyadenylation (polyA) signals; sequences that stabilize cytoplasmic mRNA; sequences that enhance translation efficiency (i.e., Kozak consensus sequence); sequences that enhance protein stability; and when desired, sequences that enhance secretion of the encoded product. A great number of expression control sequences, including promoters which are native, constitutive, inducible and/or tissue-specific, are known in the art and may be utilized.

A “promoter” refers to a DNA sequence recognized by the synthetic machinery of the cell, or introduced synthetic machinery, required to initiate the specific transcription of a gene. The phrases “operatively positioned,” “under control” or “under transcriptional control” means that the promoter is in the correct location and orientation in relation to the nucleic acid to control RNA polymerase initiation and expression of the gene.

For nucleic acids encoding proteins, a polyadenylation sequence generally is inserted following the transgene sequences and before the 3′ AAV ITR sequence. A rAAV construct useful in the present disclosure may also contain an intron, desirably located between the promoter/enhancer sequence and the transgene. As disclosed herein, one possible intron sequence is derived from SV-40 and is referred to as the SV-40 T intron sequence. Another vector element that may be used is an internal ribosome entry site (IRES). An IRES sequence is used to produce more than one polypeptide from a single gene transcript. An IRES sequence would be used to produce a protein that contain more than one polypeptide chains. Selection of these and other common vector elements are conventional and many such sequences are available [see, e.g., Sambrook et al., and references cited therein at, for example, pages 3.18 3.26 and 16.17 16.27 and Ausubel et al., Current Protocols in Molecular Biology, John Wiley & Sons, New York, 1989]. In some embodiments, a Foot and Mouth Disease Virus 2A sequence is included in polyprotein; this is a small peptide (approximately 18 amino acids in length) that has been shown to mediate the cleavage of polyproteins (Ryan, M D et al., EMBO, 1994; 4: 928-933; Mattion, N M et al., J Virology, November 1996; p. 8124-8127; Furler, S et al., Gene Therapy, 2001; 8: 864-873; and Halpin, C et al., The Plant Journal, 1999; 4: 453-459). The cleavage activity of the 2A sequence has previously been demonstrated in artificial systems including plasmids and gene therapy vectors (AAV and retroviruses) (Ryan, M D et al., EMBO, 1994; 4: 928-933; Mattion, N M et al., J Virology, November 1996; p. 8124-8127; Furler, S et al., Gene Therapy, 2001; 8: 864-873; and Halpin, C et al., The Plant Journal, 1999; 4: 453-459; de Felipe, P et al., Gene Therapy, 1999; 6: 198-208; de Felipe, P et al., Human Gene Therapy, 2000; 11: 1921-1931.; and Klump, H et al., Gene Therapy, 2001; 8: 811-817).

Examples of constitutive promoters include, without limitation, the retroviral Rous sarcoma virus (RSV) LTR promoter (optionally with the RSV enhancer), the cytomegalovirus (CMV) promoter (optionally with the CMV enhancer) [see, e.g., Boshart et al., Cell, 41:521-530 (1985)], the SV40 promoter, the dihydrofolate reductase promoter, the $-actin promoter, the phosphoglycerol kinase (PGK) promoter, and the EF1α promoter [Invitrogen]. In some embodiments, a promoter is an enhanced chicken β-actin promoter. In some embodiments, a promoter is a U6 promoter.

Inducible promoters allow regulation of gene expression and can be regulated by exogenously supplied compounds, environmental factors such as temperature, or the presence of a specific physiological state, e.g., acute phase, a particular differentiation state of the cell, or in replicating cells only. Inducible promoters and inducible systems are available from a variety of commercial sources, including, without limitation, Invitrogen. Clontech and Ariad. Many other systems have been described and can be readily selected by one of skill in the art. Examples of inducible promoters regulated by exogenously supplied promoters include the zinc-inducible sheep metallothionine (MT) promoter, the dexamethasone (Dex)-inducible mouse mammary tumor virus (MMTV) promoter, the T7 polymerase promoter system (WO 98/10088); the ecdysone insect promoter (No et al., Proc. Natl. Acad. Sci. USA, 93:3346-3351 (1996)), the tetracycline-repressible system (Gossen et al., Proc. Natl. Acad. Sci. USA, 89:5547-5551 (1992)), the tetracycline-inducible system (Gossen et al., Science, 268:1766-1769 (1995), see also Harvey et al., Curr. Opin. Chem. Biol., 2:512-518 (1998)), the RU486-inducible system (Wang et al., Nat. Biotech., 15:239-243 (1997) and Wang et al., Gene Ther., 4:432-441 (1997)) and the rapamycin-inducible system (Magari et al., J. Clin. Invest., 100:2865-2872 (1997)). Still other types of inducible promoters which may be useful in this context are those which are regulated by a specific physiological state, e.g., temperature, acute phase, a particular differentiation state of the cell, or in replicating cells only.

In another embodiment, the native promoter for the transgene will be used. The native promoter may be preferred when it is desired that expression of the transgene should mimic the native expression. The native promoter may be used when expression of the transgene must be regulated temporally or developmentally, or in a tissue-specific manner, or in response to specific transcriptional stimuli. In a further embodiment, other native expression control elements, such as enhancer elements, polyadenylation sites or Kozak consensus sequences may also be used to mimic the native expression.

Aspects of the disclosure relate to an isolated nucleic acid comprising more than one promoter (e.g., 2, 3, 4, 5, or more promoters). For example, in the context of a construct having a transgene comprising a first region encoding a protein and an second region encoding an inhibitory RNA (e.g., miRNA), it may be desirable to drive expression of the protein coding region using a first promoter sequence (e.g., a first promoter sequence operably linked to the protein coding region), and to drive expression of the inhibitory RNA encoding region with a second promoter sequence (e.g., a second promoter sequence operably linked to the inhibitory RNA encoding region). Generally, the first promoter sequence and the second promoter sequence can be the same promoter sequence or different promoter sequences. In some embodiments, the first promoter sequence (e.g., the promoter driving expression of the protein coding region) is an RNA polymerase III (polIII) promoter sequence. Non-limiting examples of polIII promoter sequences include U6 and H1 promoter sequences. In some embodiments, the second promoter sequence (e.g., the promoter sequence driving expression of the inhibitory RNA) is an RNA polymerase II (polII) promoter sequence. Non-limiting examples of polII promoter sequences include 7, T3, SP6, RSV, and cytomegalovirus promoter sequences. In some embodiments, a polIII promoter sequence drives expression of an inhibitory RNA (e.g., miRNA) encoding region. In some embodiments, a polII promoter sequence drives expression of a protein coding region. In some embodiments, the first promoter sequence (e.g., the promoter driving expression of the protein coding region) is a BMP response element (pBRE) promoter sequence and the second promoter sequence (e.g., a second promoter sequence operably linked to the inhibitory RNA encoding region) is a NF-kB promoter sequence.

As disclosed herein, the artificial microRNA (ami-RNA) that decreases the expression of the target gene ACVR1 is selected from an RH1 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 5, an RH2 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 6, an RH3 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 56, an RH4 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 57, an RH5 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 58, an RH6 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 59, an RH7 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 60, an RH8 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 61, an RH9 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 62, an RH10 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 63, RH11 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 64, and RH12 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 65 (FIG. 3 ). In some embodiments, the ami-RNA that decreases the expression of the target gene ACVR1 is an RH1 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 5, an RH2 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 6, an RH4 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 57, an RH5 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 58, an RH6 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 59, and an RH7 ami-RNA that is encoded by the sequence set forth in SEQ ID NO: 60. In some embodiments, the ami-RNA that decreases the expression of the target gene ACVR1 does not affect the expression of wild type ACVR1. In some embodiments, the ami-RNA that decreases the expression of the target gene ACVR1 does not affect the expression of the codon optimized ACVR1. In some embodiments, rAAV-mediated gene transfer carrying an ami-RNA targeting a mutated ACVR1 is a gene replacement platform as disclosed herein.

Aspects of the disclosure relate to an isolated nucleic acid comprising an isolated nucleic acid comprising a transgene encoding an artificial microRNA for reducing ACVR1 expression and a transgene encoding at least one codon optimized ACVR1 (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or more codon optimized ACVR1). In some embodiments, coexpression of amiR-ACVR1-RH (e.g., amiR-33) and codon optimized ACVR1 replaces ACVR1-R206H mRNA with wild type ACVR1 mRNA. As used herein, “replace” ACVR1-R206H mRNA with wild type ACVR1 mRNA means that the expression of the mutated ACVR1 gene (e.g., ACVR1-R206H) is reduced or inhibited due to the competitive binding of the codon optimized ACVR1. In some embodiments, at least 50%, 60%, 70%, 80%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, inclusive all ranges and subranges therein, of the mutated ACVR1 gene (e.g., ACVR1-R206H) is reduced or inhibited. In some embodiments, at least 50%, 60%, 70%, 80%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, inclusive all ranges and subranges therein, of the wild type ACVR1 gene (e.g., codon optimized ACVR1) replaces the mutated ACVR1 gene (e.g., ACVR1-R206H).

In some aspects, the isolated nucleic acid comprising an isolated nucleic acid comprising a transgene encoding an artificial microRNA for reducing ACVR1 expression and a transgene encoding at least one codon optimized ACVR1 comprises a promoter. In some embodiments, the promoter as used in the vector construct is a chicken beta-actin (CBA) promoter. In some embodiments, the promoter as used in the vector construct can be any promoter suitable gene replacement platform. In some embodiments, the CBA promoter comprises a MassBiologics novel (MBL) intron in the vector. In some embodiments, the CBA promoter comprises a synthetic intron in the vector. In some embodiments, the CBA intron can be substituted by a MBL intron or a synthetic intron in the isolated nucleic acid as disclosed herein.

Gene Editing Molecules

In some aspects, the disclosure provides a recombinant gene editing complex comprising a single guide RNA (sgRNA) that specifically hybridizes to a target nucleic acid sequence of an ACVR1 gene, a first rAAV particle encoding a first recombinant gene editing protein or fragment thereof, and a second rAAV particle encoding a second recombinant gene editing protein or fragment thereof.

In some embodiments, the first recombinant gene editing protein comprises a Cas9-based adenine base editor (ABE) N-terminus portion and its fragments thereof. In some embodiments, the second recombinant gene editing protein comprises a Cas9-based adenine base editor (ABE) C-terminus portion and its fragments thereof.

In some embodiments, the recombinant gene editing complex further comprises a protospacer adjacent motif. Without wishing to be bound by any theory, protospacer adjacent motif (PAM) is a 2-6-base pair DNA sequence immediately following the DNA sequence targeted by the Cas9 nuclease in the CRISPR bacterial adaptive immune system. The PAM is a component of the invading virus or plasmid but is not found in the bacterial host genome and hence is not a component of the bacterial CRISPR locus.

As used herein, “gene editing complex” refers to a biologically active molecule (e.g., a protein, one or more proteins, a nucleic acid, one or more nucleic acids, or any combination of the foregoing) configured for adding, disrupting or changing genomic sequences (e.g., a gene sequence), for example by causing one or more double stranded breaks (DSBs) in a target DNA. Examples of gene editing complexes include but are not limited to Transcription Activator-like Effector Nucleases (TALENs), Zinc Finger Nucleases (ZFNs), engineered meganuclease re-engineered homing endonucleases, the CRISPR/Cas system, and meganucleases (e.g., Meganuclease I-SceI). In some embodiments, a gene editing complex comprises proteins or molecules (e.g., recombinant gene editing proteins) related to the CRISPR/Cas system, including but not limited to Cas9, Cas6, Cpf1, CRISPR RNA (crRNA), trans-activating crRNA (tracrRNA), and variants thereof.

In some embodiments, a recombinant gene editing protein is a nuclease. As used herein, the terms “endonuclease” and “nuclease” refer to an enzyme that cleaves a phosphodiester bond or bonds within a polynucleotide chain. Nucleases may be naturally occurring or genetically engineered. Genetically engineered nucleases are particularly useful for genome editing and are generally classified into four families: zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), meganucleases (e.g., engineered meganucleases) and CRISPR-associated proteins (Cas nucleases). In some embodiments, the nuclease is a ZFN. In some embodiments, the ZFN comprises a FokI cleavage domain. In some embodiments, the ZFN comprises Cys₂His₂ fold group. In some embodiments, the nuclease is a TALEN. In some embodiments, the TALEN comprises a FokI cleavage domain. In some embodiments, the nuclease is a meganuclease. Examples of meganucleases include but are not limited to I-SceI, I-CreI, I-DmoI, and combinations thereof (e.g., E-DreI, DmoCre).

The term “CRISPR” refers to “clustered regularly interspaced short palindromic repeats”, which are DNA loci containing short repetitions of base sequences. CRISPR loci form a portion of a prokaryotic adaptive immune system that confers resistance to foreign genetic material. Each CRISPR loci is flanked by short segments of “spacer DNA”, which are derived from viral genomic material. In the Type II CRISPR system, spacer DNA hybridizes to transactivating RNA (tracrRNA) and is processed into CRISPR-RNA (crRNA) and subsequently associates with CRISPR-associated nucleases (Cas nucleases) to form complexes that recognize and degrade foreign DNA. In certain embodiments, the nuclease is a CRISPR-associated nuclease (Cas nuclease). Examples of CRISPR nucleases include, but are not limited to Cas9, dCas9, Cas6, Cpf1, and variants thereof. In some embodiments, the nuclease is Cas9. In some embodiments, the Cas9 is derived from the bacteria Streptococcus pyogenes (e.g., SpCas9) or Staphylococcus aureus (e.g., SaCas9). In some embodiments, a Cas protein or variant thereof does not exceed the packaging capacity of a viral vector, such as a lentiviral vector or an adeno-associated virus (AAV) vector, for example as described by Ran et al. (2015) Nature. 520(7546); 186-91. For example, in some embodiments, a nucleic acid encoding a Cas protein is less than about 4.6 kb in length.

For the purpose of genome editing, the CRISPR system can be modified to combine the tracrRNA and crRNA into a single guide RNA (sgRNA) or just (gRNA). As used herein, the terms “guide RNA”, “gRNA”, and “sgRNA” refer to a polynucleotide sequence that is complementary to a target sequence in a cell and associates with a Cas nuclease, thereby directing the Cas nuclease to the target sequence. In some embodiments, a gRNA (e.g., sgRNA) ranges between 1 and 30 nucleotides in length. In some embodiments, a gRNA (e.g., sgRNA) ranges between 5 and 25 nucleotides in length. In some embodiments, a gRNA (e.g., sgRNA) ranges between 10 and 22 nucleotides in length. In some embodiments, a gRNA (e.g., sgRNA) ranges between 14 and 24 nucleotides in length. In some embodiments, a Cas protein and a guide RNA (e.g., sgRNA) are expressed from the same vector. In some embodiments, a Cas protein and a guide RNA (e.g., sgRNA) are expressed from separate vectors (e.g., two or more vectors). Typically, a guide RNA (e.g., a gRNA or sgRNA) hybridizes (e.g., binds specifically to, for example by Watson-Crick base pairing) to a target sequence and thus directs the CRISPR/Cas protein or simple protein to the target sequence. In some embodiments, a guide RNA hybridizes to (e.g., targets) a nucleic acid sequence.

As disclosed herein, the recombinant gene editing complex comprises a Cas9-based adenine base editor (ABE). Cas9-based adenine base editor (ABE) compatible to rAAV has been developed to directly convert a target base pair to a different base pair without creating double-stranded DNA breaks. Thus, an rAAV9-compatible ABE construct was used to convert “A” into “G” in the ACVR1-R206H allele. The ABE is divided into halves that are smaller than the AAV packaging size limit (˜4.7 kb) using a trans-splicing intein sequence, which enables dual-AAV packaging of base editors. Without wishing to be bound by theory, delivery via AAVs is limited by AAV packaging capacity, which precludes the use of full-length base editors. The application of dual AAVs for the delivery of split cytosine and adenine base editors that are then reconstituted by trans-splicing inteins. In some embodiments, the ABE as disclosed herein is divided into a N-terminal ABE construct and a C-terminal ABE construct. In some embodiments, the ABE is divided by using a trans-splicing intein sequence. In some embodiments, the N-terminal ABE construct comprises protospacer having the ACVR1-R206H mutation. In some embodiments, the C-terminal ABE construct is integrated into the AAV6.2 or AAV9 capsid protein. In some embodiments, the ABE converts adenine into guanine in the ACVR1-R206H allele.

The present disclosure provides an isolated nucleic acid comprising a first transgene comprising a NF-kB promoter (pNF-kB) and a second transgene comprising a bone morphogenic protein promoter (pBRE). In some embodiments, the pNF-kB induces the expression of soluble follistatin (sFST). In some embodiments, the pBRE induces the expression of TNFR2. In some embodiments, activin A triggers the expression of sFST and TNFR2. In some embodiments, a BMP ligand triggers the expression of sFST and TNFR2. In some embodiments, inflammation triggers the expression of sFST and TNFR2. In some embodiments, the isolated nucleic acid induces the expression of a human soluble IL1Rα (sIL1Rα) (SEQ ID NO: 35). Anakinra (Kineret), an interleukin 1 receptor antagonist protein that treats rheumatoid arthritis, has been shown to effectively slow the progression of FOP. The isolated nucleic acid as disclosed herein provides expression of activin A antagonist, TNF antagonist, and IL-1 antagonist, for example. In some embodiments, the isolated nucleic acid is integrated into an AAV vector.

In some embodiments, the pNF-kB is a PB2 promoter (SEQ ID NO: 30). In some embodiments, the pBRE comprises the sequence of SEQ ID NO: 31. In some embodiments, the isolated nucleic acid has the sequence of SEQ ID NO: 32.

Inflammation and activin A have been shown to involve in heterotopic ossification (HO). As levels of activin A, BMP ligands, and inflammatory cytokines are elevated in the area of flare-up, the Applicant found that rAAV9 vectors can secret a natural activin A antagonist, soluble follistatin (sFST), and a natural TNF antagonist, soluble TNFR2 (sTNFR2), in response to flare-up. In some embodiments, the expression of sFST and TNFR2 suppress activin A signaling pathways in flare-up conditions. In some embodiments, the expression of sFST and TNFR2 suppress TNF signaling pathways in flare-up conditions.

Local or systemic injection of rAAV9 is highly effective for the transduction of skeletal muscle, which produces sFST and sTNFR2 in the area of flare-up, suppressing the development of neighboring HO. In some embodiments, the isolated nucleic acid further comprises a Gaussia luciferase reporter gene (eBRE/NF-kB-Luc). Without wishing to be bound any theory, Gaussia luciferase is a 20 kDa protein from the marine copepod, Gaussia princeps. The bioluminescent enzyme is highly secreted into the cell culture media, allowing for live cell monitoring of reporter activity. Light output generated by the luciferase reaction can be correlated to the amount of Gaussia luciferase protein produced and used to determine the activity of the promoter driving Gaussia expression.

The present disclosure provides an isolated nucleic acid comprising a first transgene comprising a nucleic acid sequence encoding a soluble follistatin (sFST) and a second transgene comprising a nucleic acid sequence encoding TNFR2. In some embodiments, the first and the second transgene is operably linked to a promoter, such as chicken β-actin promoter. In some embodiments, the promoter is a pBRE/pNF-kB promoter. In some embodiments, the isolated nucleic acid comprises a transgene encoding an artificial miRNA (ami-RNA). In some embodiments, the ami-RNA comprises a miR-122. In some embodiments, the isolated nucleic acid as disclosed herein provides a natural activin A antagonist, soluble human follistatin (e.g., FST-288) and a natural TNF antagonist, soluble human TNFR2, that is cloned into the AAV vector genome. In some embodiments, the AAV vector is an rAAV9 vector.

Without wishing to be bound by any theory, follistatin and sTNFR2 competitively bind activin A and TNFα against their cognate receptors and therefore, suppress activin A and TNFα-induced signal transduction, respectively. However, following systemic delivery, rAAV9 vectors can target additional tissues such as liver, heart, and skeletal muscle, which may cause adverse effects. Therefore, the present disclosure provides tissue-specific, endogenous miRNAs (e.g., miR-122) to repress rAAV expression in liver, by engineering perfectly complementary miR-122-binding sites into the AAV vector genome. In some embodiments, the isolated nucleic acid comprises the sequence of SEQ ID NO: 33. In some embodiments, the isolated nucleic acid comprises the sequence of SEQ ID NO: 34. In some embodiments, an rAAV vector comprises one or more miRNA binding sites that de-target expression of a transgene from heart tissue (e.g., cardiac muscle). In some embodiments, the miRNA binding site is a miR-208 binding site. In some embodiments, an rAAV comprises one or more (e.g., 1, 2, 3, 4, or more) miR-208 binding sites. In some embodiments, the one or more miR-208 binding sites comprises the sequence set forth in SEQ ID NO: 48.

Recombinant AAVs (rAAVs)

The isolated nucleic acids of the disclosure may be recombinant adeno-associated virus (AAV) vectors (rAAV vectors). In some embodiments, an isolated nucleic acid as described by the disclosure comprises a region (e.g., a first region) comprising a first adeno-associated virus (AAV) inverted terminal repeat (ITR), or a variant thereof. The isolated nucleic acid (e.g., the recombinant AAV vector) may be packaged into a capsid protein and administered to a subject and/or delivered to a selected target cell. “Recombinant AAV (rAAV) vectors” are typically composed of, at a minimum, a transgene and its regulatory sequences, and 5′ and 3′ AAV inverted terminal repeats (ITRs). The transgene may comprise, as disclosed elsewhere herein, one or more regions that encode one or more proteins and/or inhibitory nucleic acids (e.g., shRNA, miRNAs, etc.) comprising a nucleic acid that targets an endogenous mRNA of a subject. The transgene may also comprise a region encoding, for example, a protein and/or an expression control sequence (e.g., a poly-A tail), as described elsewhere in the disclosure.

Generally, ITR sequences are about 145 bp in length. Preferably, substantially the entire sequences encoding the ITRs are used in the molecule, although some degree of minor modification of these sequences is permissible. The ability to modify these ITR sequences is within the skill of the art. (See, e.g., texts such as Sambrook et al., “Molecular Cloning. A Laboratory Manual”, 2d ed., Cold Spring Harbor Laboratory, New York (1989); and K. Fisher et al., J Virol., 70:520 532 (1996)). An example of such a molecule employed in the present invention is a “cis-acting” plasmid containing the transgene, in which the selected transgene sequence and associated regulatory elements are flanked by the 5′ and 3′ AAV ITR sequences. The AAV ITR sequences may be obtained from any known AAV, including presently identified mammalian AAV types. In some embodiments, the isolated nucleic acid (e.g., the rAAV vector) comprises at least one ITR having a serotype selected from AAV1, AAV2, AAV3, AAV4, AAV5, AAV6, AAV6.2, AAV7, AAV8, AAV9, AAVrh.8, AAVrh.10, AAVrh.39, and AAVrh.43, and variants thereof. In some embodiments, the isolated nucleic acid comprises a region (e.g., a first region) encoding an AAV9 ITR. In some embodiments, the isolated nucleic acid comprises a region (e.g., a first region) encoding an AAV6.2 ITR.

In some embodiments, the isolated nucleic acid further comprises a region (e.g., a second region, a third region, a fourth region, etc.) comprising a second AAV ITR. In some embodiments, the second AAV ITR has a serotype selected from AAV1, AAV2, AAV3, AAV4, AAV5, AAV6, AAV6.2, AAV7, AAV8, AAV9, AAVrh.8, AAVrh.10, AAVrh.39, and AAVrh.43, and variants thereof. In some embodiments, the second ITR is a mutant ITR that lacks a functional terminal resolution site (TRS). The term “lacking a terminal resolution site” can refer to an AAV ITR that comprises a mutation (e.g., a sense mutation such as a non-synonymous mutation, or missense mutation) that abrogates the function of the terminal resolution site (TRS) of the ITR, or to a truncated AAV ITR that lacks a nucleic acid sequence encoding a functional TRS (e.g., a ΔTRS ITR). Without wishing to be bound by any particular theory, a rAAV vector comprising an ITR lacking a functional TRS produces a self-complementary rAAV vector, for example as described by McCarthy (2008) Molecular Therapy 16(0.10):1648-1656.

As used herein, the term “self-complementary AAV vector” (scAAV) refers to a vector containing a double-stranded vector genome generated by the absence of a terminal resolution site (TR) from one of the ITRs of the AAV. The absence of a TR prevents the initiation of replication at the vector terminus where the TR is not present. In general, scAAV vectors generate single-stranded, inverted repeat genomes, with a wild-type (wt) AAV TR at each end and a mutated TR (mTR) in the middle. The instant invention is based, in part, on the recognition that DNA fragments encoding RNA hairpin structures (e.g. shRNA, miRNA, and ami-RNA) can serve a function similar to a mutant inverted terminal repeat (mTR) during viral genome replication, generating self-complementary AAV vector genomes. For example, in some embodiments, the disclosure provides rAAV (e.g. self-complementary AAV; scAAV) vectors comprising a single-stranded self-complementary nucleic acid with inverted terminal repeats (ITRs) at each of two ends and a central portion comprising a promoter operably linked with a sequence encoding a hairpin-forming RNA (e.g., shRNA, miRNA, ami-RNA, etc.). In some embodiments, the sequence encoding a hairpin-forming RNA (e.g., shRNA, miRNA, ami-RNA, etc.) is substituted at a position of the self-complementary nucleic acid normally occupied by a mutant ITR.

“Recombinant AAV (rAAV) vectors” are typically composed of, at a minimum, a transgene and its regulatory sequences, and 5′ and 3′ AAV inverted terminal repeats (ITRs). It is this recombinant AAV vector which is packaged into a capsid protein and delivered to a selected target cell. In some embodiments, the transgene is a nucleic acid sequence, heterologous to the vector sequences, which encodes a polypeptide, protein, functional RNA molecule (e.g., miRNA, miRNA inhibitor) or other gene product, of interest. The nucleic acid coding sequence is operatively linked to regulatory components in a manner which permits transgene transcription, translation, and/or expression in a cell of a target tissue.

The instant disclosure provides a vector comprising a single, cis-acting wild-type ITR. In some embodiments, the ITR is a 5′ ITR. In some embodiments, the ITR is a 3′ ITR. Generally, ITR sequences are about 145 bp in length. Preferably, substantially the entire sequences encoding the ITR(s) is used in the molecule, although some degree of minor modification of these sequences is permissible. The ability to modify ITR sequences is within the skill of the art. (See, e.g., texts such as Sambrook et al, “Molecular Cloning. A Laboratory Manual”, 2d ed., Cold Spring Harbor Laboratory, New York (1989); and K. Fisher et al., J Virol., 70:520 532 (1996)). For example, an ITR may be mutated at its terminal resolution site (TR), which inhibits replication at the vector terminus where the TR has been mutated and results in the formation of a self-complementary AAV. Another example of such a molecule employed in the present disclosure is a “cis-acting” plasmid containing the transgene, in which the selected transgene sequence and associated regulatory elements are flanked by the 5′ AAV ITR sequence and a 3′ hairpin-forming RNA sequence. AAV ITR sequences may be obtained from any known AAV, including presently identified mammalian AAV types. In some embodiments, an ITR sequence is an AAV2, AAV3, AAV4, AAV5, AAV6, AAV7, AAV8, AAVrh8, AAV9, AAV10, and/or AAVrh10 ITR sequence.

In some embodiments, the rAAVs of the disclosure are pseudotyped rAAVs. For example, a pseudotyped AAV vector containing the ITRs of serotype X encapsidated with the proteins of Y will be designated as AAVX/Y (e.g. AAV2/1 has the ITRs of AAV2 and the capsid of AAV1). In some embodiments, pseudotyped rAAVs may be useful for combining the tissue-specific targeting capabilities of a capsid protein from one AAV serotype with the viral DNA from another AAV serotype, thereby allowing targeted delivery of a transgene to a target tissue.

Methods for obtaining recombinant AAVs having a desired capsid protein are well known in the art. (See, for example, US 2003/0138772), the contents of which are incorporated herein by reference in their entirety). Typically the methods involve culturing a host cell which contains a nucleic acid sequence encoding an AAV capsid protein; a functional rep gene; a recombinant AAV vector composed of, AAV inverted terminal repeats (ITRs) and a transgene; and sufficient helper functions to permit packaging of the recombinant AAV vector into the AAV capsid proteins. In some embodiments, capsid proteins are structural proteins encoded by the cap gene of an AAV. AAVs comprise three capsid proteins, virion proteins 1 to 3 (named VP1, VP2 and VP3), all of which are transcribed from a single cap gene via alternative splicing. In some embodiments, the molecular weights of VP1, VP2 and VP3 are respectively about 87 kDa, about 72 kDa and about 62 kDa. In some embodiments, upon translation, capsid proteins form a spherical 60-mer protein shell around the viral genome. In some embodiments, the functions of the capsid proteins are to protect the viral genome, deliver the genome and interact with the host. In some aspects, capsid proteins deliver the viral genome to a host in a tissue specific manner.

In some embodiments, an AAV capsid protein is of an AAV serotype selected from the group consisting of AAV1, AAV2, AAV3, AAV4, AAV5, AAV6, AAV6.2, AAV7, AAV8, AAVrh8, AAV9, AAVrh10, AAVrh39, AAVrh43, AAV2/2-66, AAV2/2-84, AAV2/2-125. In some embodiments, an AAV capsid protein is of a serotype derived from a non-human primate, for example scAAV.rh8. AAV.rh39, or AAV.rh43 serotype. In some embodiments, an AAV capsid protein is of an AAV9 serotype. In some embodiments, an AAV capsid protein is of an AAV6.2 serotype.

The components to be cultured in the host cell to package a rAAV vector in an AAV capsid may be provided to the host cell in trans. Alternatively, any one or more of the required components (e.g., recombinant AAV vector, rep sequences, cap sequences, and/or helper functions) may be provided by a stable host cell which has been engineered to contain one or more of the required components using methods known to those of skill in the art. Most suitably, such a stable host cell will contain the required component(s) under the control of an inducible promoter. However, the required component(s) may be under the control of a constitutive promoter. Examples of suitable inducible and constitutive promoters are provided herein, in the discussion of regulatory elements suitable for use with the transgene. In still another alternative, a selected stable host cell may contain selected component(s) under the control of a constitutive promoter and other selected component(s) under the control of one or more inducible promoters. For example, a stable host cell may be generated which is derived from HEK293 cells (which contain E1 helper functions under the control of a constitutive promoter), but which contain the rep and/or cap proteins under the control of inducible promoters. Still other stable host cells may be generated by one of skill in the art.

The recombinant AAV vector, rep sequences, cap sequences, and helper functions required for producing the rAAV of the disclosure may be delivered to the packaging host cell using any appropriate genetic element (vector). The selected genetic element may be delivered by any suitable method, including those described herein. The methods used to construct any embodiment of this disclosure are known to those with skill in nucleic acid manipulation and include genetic engineering, recombinant engineering, and synthetic techniques. See, e.g., Sambrook et al., Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Press, Cold Spring Harbor, N.Y. Similarly, methods of generating rAAV virions are well known and the selection of a suitable method is not a limitation on the present disclosure. See, e.g., K. Fisher et al., J. Virol., 70:520-532 (1993) and U.S. Pat. No. 5,478,745.

In some embodiments, recombinant AAVs may be produced using the triple transfection method (described in detail in U.S. Pat. No. 6,001,650). Typically, the recombinant AAVs are produced by transfecting a host cell with an recombinant AAV vector (comprising a transgene) to be packaged into AAV particles, an AAV helper function vector, and an accessory function vector. An AAV helper function vector encodes the “AAV helper function” sequences (i.e., rep and cap), which function in trans for productive AAV replication and encapsidation. Preferably, the AAV helper function vector supports efficient AAV vector production without generating any detectable wild-type AAV virions (i.e., AAV virions containing functional rep and cap genes). Non-limiting examples of vectors suitable for use with the present disclosure include pHLP19, described in U.S. Pat. No. 6,001,650 and pRep6cap6 vector, described in U.S. Pat. No. 6,156,303, the entirety of both incorporated by reference herein. The accessory function vector encodes nucleotide sequences for non-AAV derived viral and/or cellular functions upon which AAV is dependent for replication (i.e., “accessory functions”). The accessory functions include those functions required for AAV replication, including, without limitation, those moieties involved in activation of AAV gene transcription, stage specific AAV mRNA splicing, AAV DNA replication, synthesis of cap expression products, and AAV capsid assembly. Viral-based accessory functions can be derived from any of the known helper viruses such as adenovirus, herpesvirus (other than herpes simplex virus type-1), and vaccinia virus.

In some aspects, the disclosure provides transfected host cells. The term “transfection” is used to refer to the uptake of foreign DNA by a cell, and a cell has been “transfected” when exogenous DNA has been introduced inside the cell membrane. A number of transfection techniques are generally known in the art. See, e.g., Graham et al. (1973) Virology, 52:456, Sambrook et al. (1989) Molecular Cloning, a laboratory manual, Cold Spring Harbor Laboratories, New York, Davis et al. (1986) Basic Methods in Molecular Biology, Elsevier, and Chu et al. (1981) Gene 13:197. Such techniques can be used to introduce one or more exogenous nucleic acids, such as a nucleotide integration vector and other nucleic acid molecules, into suitable host cells.

A “host cell” refers to any cell that harbors, or is capable of harboring, a substance of interest. Often a host cell is a mammalian cell. In some embodiments, a host cell is a bacterial cell, yeast cell, insect cell (Sf9), or a mammalian (e.g., human, rodent, non-human primate, etc.) cell. In some embodiments, the mammalian cell is a HEK293 cell. A host cell may be used as a recipient of an AAV helper construct, an AAV minigene plasmid, an accessory function vector, or other transfer DNA associated with the production of recombinant AAVs. The term includes the progeny of the original cell which has been transfected. Thus, a “host cell” as used herein may refer to a cell which has been transfected with an exogenous DNA sequence. It is understood that the progeny of a single parental cell may not necessarily be completely identical in morphology or in genomic or total DNA complement as the original parent, due to natural, accidental, or deliberate mutation.

As used herein, the term “cell line” refers to a population of cells capable of continuous or prolonged growth and division in vitro. Often, cell lines are clonal populations derived from a single progenitor cell. It is further known in the art that spontaneous or induced changes can occur in karyotype during storage or transfer of such clonal populations. Therefore, cells derived from the cell line referred to may not be precisely identical to the ancestral cells or cultures, and the cell line referred to includes such variants.

As used herein, the terms “recombinant cell” refers to a cell into which an exogenous DNA segment, such as DNA segment that leads to the transcription of a biologically-active polypeptide or production of a biologically active nucleic acid such as an RNA, has been introduced.

In some aspects, the present disclosure provides a recombinant AAV comprising a capsid protein and an isolated nucleic acid comprising a first region encoding an AAV ITR and a second region comprising a transgene, wherein the transgene encodes an artificial microRNA. The artificial microRNA may decrease the expression of a target gene in a cell or tissue (e.g. skeletal muscles, tendons, and cartilage) or a subject. In some embodiments, the rAAV comprises an artificial microRNA that decreases the expression of ACVR1 in a cell, tissue, or a subject.

Expression of the mutated ACVR1 gene in a cell, tissue, or subject may be decreased by between 50% and 99% (e.g., any integer between 50% and 99%, inclusive) using rAAVs of the present disclosure. Expression of ACVR1 gene in a cell, tissue, or subject may be decreased by between 75% and 90% using rAAVs of the present disclosure. Expression of ACVR1 gene in a cell, tissue, or subject may be decreased by between 80% and 99% using rAAVs of the present disclosure.

The foregoing methods for packaging recombinant vectors in desired AAV capsids to produce the rAAVs of the disclosure are not meant to be limiting and other suitable methods will be apparent to the skilled artisan.

Modes of Administration and Compositions

The rAAVs of the disclosure may be delivered to a subject in compositions according to any appropriate methods known in the art. For example, an rAAV, preferably suspended in a physiologically compatible carrier (e.g., in a composition), may be administered to a subject, e.g., host animal, such as a human, mouse, rat, cat, dog, sheep, rabbit, horse, cow, goat, pig, guinea pig, hamster, chicken, turkey, or a non-human primate (e.g., Macaque). In some embodiments a host animal does not include a human. In some embodiments, a subject is an adult. In some embodiments, a subject is a juvenile or infant.

In some embodiments, the rAAV comprises an isolated nucleic acid comprising the codon optimized ACVR1 having the sequence that is at least 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, or 99% identity, or are 100% identical, including all values in between to any one of SEQ ID NOs: 1-4. In some embodiments, the rAAV comprises an isolated nucleic acid comprising the codon optimized ACVR1 having the sequence set forth in any one of SEQ ID NOs: 1-4 (or the complementary sequence thereof), or a portion thereof.

Delivery of the rAAVs to a mammalian subject may be by, for example, intramuscular injection or by administration into the bloodstream of the mammalian subject. Administration into the bloodstream may be by injection into a vein, an artery, or any other vascular conduit. In some embodiments, the rAAVs are administered into the bloodstream by way of isolated limb perfusion, a technique well known in the surgical arts, the method essentially enabling the artisan to isolate a limb from the systemic circulation prior to administration of the rAAV virions. A variant of the isolated limb perfusion technique, described in U.S. Pat. No. 6,177,403, can also be employed by the skilled artisan to administer the virions into the vasculature of an isolated limb to potentially enhance transduction into muscle cells or tissue. Moreover, in certain instances, it may be desirable to deliver the virions to the skeletal muscle and/or to the connective tissues of a subject. Recombinant AAVs may be delivered directly to the skeletal muscle and/or to the connective tissues by injection into, e.g., directly into the muscle or the tissue, via intrasynovial injection, knee injection, etc., with a needle, catheter or related device, using surgical techniques known in the art.

In some embodiments, rAAV as described in the disclosure are administered by interdermal delivery or intradermal delivery. The delivery procedures and methods can be any techniques that are known in the art and/or suitable for the present disclosure.

In some embodiments, rAAV as described in the disclosure are administered by microneedle drug delivery such as transdermal application. In some embodiments, rAAV as described in the disclosure are administered by the use of dermal patches for providing controlled delivery. A dermal patch, skin patch, or the like as used herein refers to a medicated adhesive patch that is placed on the skin to deliver a specific dose of a composition into the skin. Dermal or skin patches can include but are not limited to single-layer drug-in-adhesive, multi-layer drug-in-adhesive, reservoir, matrix, and vapour patches. Alternatively, or additionally, the rate can be controlled by either providing a rate controlling membrane and/or by dispersing the active ingredient in a polymer matrix and/or gel. In some embodiments, permeation enhancers can be used for enhancing the permeation of rAAV in the patch. In some embodiments, rAAV as described in the disclosure are administered by intravenous injection. In some embodiments, the rAAV are administered by intramuscular injection.

Aspects of the instant disclosure relate to compositions comprising a recombinant AAV comprising a capsid protein and a nucleic acid encoding a transgene, wherein the transgene comprises a codon optimized nucleic acid sequence encoding one or more ACVR1 or an artificial miRNA, for example. In some embodiments, the nucleic acid further comprises one or more AAV ITRs. In some embodiments, a composition further comprises a pharmaceutically acceptable carrier. In some embodiments, compositions comprise a recombinant AAV comprising a capsid protein and a nucleic acid comprising a first region encoding an AAV ITR and a second region comprising a transgene, wherein the transgene encodes an artificial microRNA that targets ACVR1.

The compositions of the disclosure may comprise an rAAV alone, or in combination with one or more other viruses (e.g., a second rAAV encoding having one or more different transgenes). In some embodiments, a composition comprises 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or more different rAAVs each having one or more different transgenes.

Suitable carriers may be readily selected by one of skill in the art in view of the indication for which the rAAV is directed. For example, one suitable carrier includes saline, which may be formulated with a variety of buffering solutions (e.g., phosphate buffered saline). Other exemplary carriers include sterile saline, lactose, sucrose, calcium phosphate, gelatin, dextran, agar, pectin, peanut oil, sesame oil, and water. The selection of the carrier is not a limitation of the present disclosure.

Optionally, the compositions of the disclosure may contain, in addition to the rAAV and carrier(s), other conventional pharmaceutical ingredients, such as preservatives, or chemical stabilizers. Suitable exemplary preservatives include chlorobutanol, potassium sorbate, sorbic acid, sulfur dioxide, propyl gallate, the parabens, ethyl vanillin, glycerin, phenol, and parachlorophenol. Suitable chemical stabilizers include gelatin and albumin.

The rAAVs are administered in sufficient amounts to transfect the cells of a desired tissue and to provide sufficient levels of gene transfer and expression without undue adverse effects. Conventional and pharmaceutically acceptable routes of administration include, but are not limited to, direct delivery to the selected organ (e.g., intraportal delivery to the liver), oral, inhalation (including intranasal and intratracheal delivery), intraocular, intravenous, intramuscular, subcutaneous, intradermal, intratumoral, and other parental routes of administration. Routes of administration may be combined, if desired.

The dose of rAAV virions required to achieve a particular “therapeutic effect,” e.g., the units of dose in genome copies/per kilogram of body weight (GC/kg), will vary based on several factors including, but not limited to: the route of rAAV virion administration, the level of gene or RNA expression required to achieve a therapeutic effect, the specific disease or disorder being treated, and the stability of the gene or RNA product. One of skill in the art can readily determine a rAAV virion dose range to treat a patient having a particular disease or disorder based on the aforementioned factors, as well as other factors that are well known in the art.

An “effective amount” of an rAAV is an amount sufficient to target infect an animal, target a desired tissue (e.g., connective tissue). The effective amount will depend primarily on factors such as the species, age, weight, health of the subject, and the tissue to be targeted, and may thus vary among animal and tissue. For example, an effective amount of the rAAV is generally in the range of from about 1 ml to about 100 ml of solution containing from about 109 to 10¹⁶ genome copies. In some cases, a dosage between about 10¹¹ to 10¹³ rAAV genome copies is appropriate. In certain embodiments, 10¹² or 10¹³ rAAV genome copies is effective to target bone tissue.

In some embodiments, a dose of rAAV is administered to a subject no more than once per calendar day (e.g., a 24-hour period). In some embodiments, a dose of rAAV is administered to a subject no more than once per 2, 3, 4, 5, 6, or 7 calendar days. In some embodiments, a dose of rAAV is administered to a subject no more than once per calendar week (e.g., 7 calendar days). In some embodiments, a dose of rAAV is administered to a subject no more than bi-weekly (e.g., once in a two calendar week period). In some embodiments, a dose of rAAV is administered to a subject no more than once per calendar month (e.g., once in 30 calendar days). In some embodiments, a dose of rAAV is administered to a subject no more than once per six calendar months. In some embodiments, a dose of rAAV is administered to a subject no more than once per calendar year (e.g., 365 days or 366 days in a leap year).

In some embodiments, rAAV compositions are formulated to reduce aggregation of AAV particles in the composition, particularly where high rAAV concentrations are present (e.g., ˜10¹³ GC/ml or more). Methods for reducing aggregation of rAAVs are well known in the art and, include, for example, addition of surfactants, pH adjustment, salt concentration adjustment, etc. (See, e.g., Wright F R, et al., Molecular Therapy (2005) 12, 171-178, the contents of which are incorporated herein by reference.) In some embodiments, administering the isolated nucleic acid, the rAAV, and/or the vector as disclosed herein results in a decrease of ACVR1 protein comprises a single base mutation of guanine to adenine at position 206 of the sequence of the wild type ACVR1 by at least 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, or by at least 2-fold, at least 5-fold, at least 10-fold, at least 20-fold, at least 50-fold, at least 100-fold, or at least 1000-fold compared to a control. In some embodiments, administering the isolated nucleic acid, the rAAV, the vector as disclosed herein results in a decrease of the human ACVR1-R206H protein by at least 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, or by at least 2-fold, at least 5-fold, at least 10-fold, at least 20-fold, at least 50-fold, at least 100-fold, or at least 1000-fold compared to a control.

In some embodiments, administering the isolated nucleic acid, the rAAV, and/or the vector as disclosed herein ameliorates heterotopic bone formation or heterotopic ossification by at least 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, or by at least 2-fold, at least 5-fold, at least 10-fold, at least 20-fold, at least 50-fold, at least 100-fold, or at least 1000-fold compared to a control.

In some embodiments, administering the isolated nucleic acid, the rAAV, and/or the vector as disclosed herein ameliorates severe osteoarthritis by at least 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, or by at least 2-fold, at least 5-fold, at least 10-fold, at least 20-fold, at least 50-fold, at least 100-fold, or at least 1000-fold compared to a control.

In some embodiments, administering the isolated nucleic acid, the rAAV, and/or the vector as disclosed herein decreases heterotopic bone mass by at least 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, or by at least 2-fold, at least 5-fold, at least 10-fold, at least 20-fold, at least 50-fold, at least 100-fold, or at least 1000-fold compared to a control.

In some embodiments, administering the isolated nucleic acid, the rAAV, and/or the vector as disclosed herein decreases chondrogenic anlagen by at least 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, or by at least 2-fold, at least 5-fold, at least 10-fold, at least 20-fold, at least 50-fold, at least 100-fold, or at least 1000-fold compared to a control.

In some embodiments, administering the isolated nucleic acid, the rAAV, and/or the vector as disclosed herein decreases BMP-responsive genes by at least 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, or by at least 2-fold, at least 5-fold, at least 10-fold, at least 20-fold, at least 50-fold, at least 100-fold, or at least 1000-fold compared to a control. In some embodiments, the BMP-responsive genes is ID1. In some embodiments, the BMP-responsive gene is MSX2. In some embodiments, the BMP-responsive gene is any gene that can be affected by the BMP signaling pathway.

As used herein, the improvement or stimulation is relative to a control. The control can be in a state that is prior to the administration of the isolated nucleic acid, the rAAV, and the vector. The improvement or stimulation is relative to a subject that has not been administered the isolated nucleic acid, the rAAV, and the vector.

In some embodiments, a “control” can refer to a subject or a tissue that contains human ACVR1-R206H proteins or the ACVR1 protein that comprises a single base mutation of guanine to adenine at position 206 of the sequence of the wild type ACVR1 while not being treated by the methods and compositions described in the present disclosure or any other methods.

Formulation of pharmaceutically-acceptable excipients and carrier solutions is well-known to those of skill in the art, as is the development of suitable dosing and treatment regimens for using the particular compositions described herein in a variety of treatment regimens.

Typically, these formulations may contain at least about 0.1% of the active compound or more, although the percentage of the active ingredient(s) may, of course, be varied and may conveniently be between about 1 or 2% and about 70% or 80% or more of the weight or volume of the total formulation. Naturally, the amount of active compound in each therapeutically-useful composition may be prepared is such a way that a suitable dosage will be obtained in any given unit dose of the compound. Factors such as solubility, bioavailability, biological half-life, route of administration, product shelf life, as well as other pharmacological considerations will be contemplated by one skilled in the art of preparing such pharmaceutical formulations, and as such, a variety of dosages and treatment regimens may be desirable.

In certain circumstances it will be desirable to deliver the rAAV-based therapeutic constructs in suitably formulated pharmaceutical compositions disclosed herein either subcutaneously, intraopancreatically, intranasally, parenterally, intravenously, intramuscularly, intradermally, intrathecally, femoral intramedullary, or orally, intraperitoneally, or by inhalation. In some embodiments, the administration modalities as described in U.S. Pat. Nos. 5,543,158; 5,641,515 and 5,399,363 (each specifically incorporated herein by reference in its entirety) may be used to deliver rAAVs. In some embodiments, a preferred mode of administration is by portal vein injection. In some embodiments, a preferred mode of administration is by systemic injection, for example intravenous injection. In some embodiments, a preferred mode of administration is by intramuscular injection. In some embodiments, a preferred mode of administration is by intradermal injection.

The pharmaceutical forms suitable for injectable use include sterile aqueous solutions or dispersions and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersions. Dispersions may also be prepared in glycerol, liquid polyethylene glycols, and mixtures thereof and in oils. Under ordinary conditions of storage and use, these preparations contain a preservative to prevent the growth of microorganisms. In many cases the form is sterile and fluid to the extent that easy syringability exists. It must be stable under the conditions of manufacture and storage and must be preserved against the contaminating action of microorganisms, such as bacteria and fungi. The carrier can be a solvent or dispersion medium containing, for example, water, ethanol, polyol (e.g., glycerol, propylene glycol, and liquid polyethylene glycol, and the like), suitable mixtures thereof, and/or vegetable oils. Proper fluidity may be maintained, for example, by the use of a coating, such as lecithin, by the maintenance of the required particle size in the case of dispersion and by the use of surfactants. The prevention of the action of microorganisms can be brought about by various antibacterial and antifungal agents, for example, parabens, chlorobutanol, phenol, sorbic acid, thimerosal, and the like. In many cases, it will be preferable to include isotonic agents, for example, sugars or sodium chloride. Prolonged absorption of the injectable compositions can be brought about by the use in the compositions of agents delaying absorption, for example, aluminum monostearate and gelatin.

For administration of an injectable aqueous solution, for example, the solution may be suitably buffered, if necessary, and the liquid diluent first rendered isotonic with sufficient saline or glucose. These particular aqueous solutions are especially suitable for intravenous, intramuscular, subcutaneous and intraperitoneal administration. In this connection, a sterile aqueous medium that can be employed will be known to those of skill in the art. For example, one dosage may be dissolved in 1 ml of isotonic NaCl solution and either added to 1000 ml of hypodermoclysis fluid or injected at the proposed site of infusion, (see for example, “Remington's Pharmaceutical Sciences” 15th Edition, pages 1035-1038 and 1570-1580). Some variation in dosage will necessarily occur depending on the condition of the host. The person responsible for administration will, in any event, determine the appropriate dose for the individual host.

Sterile injectable solutions are prepared by incorporating the active rAAV in the required amount in the appropriate solvent with various of the other ingredients enumerated herein, as required, followed by filtered sterilization. Generally, dispersions are prepared by incorporating the various sterilized active ingredients into a sterile vehicle which contains the basic dispersion medium and the required other ingredients from those enumerated above. In the case of sterile powders for the preparation of sterile injectable solutions, the preferred methods of preparation are vacuum-drying and freeze-drying techniques which yield a powder of the active ingredient plus any additional desired ingredient from a previously sterile-filtered solution thereof.

The rAAV compositions disclosed herein may also be formulated in a neutral or salt form. Pharmaceutically-acceptable salts, include the acid addition salts (formed with the free amino groups of the protein) and which are formed with inorganic acids such as, for example, hydrochloric or phosphoric acids, or such organic acids as acetic, oxalic, tartaric, mandelic, and the like. Salts formed with the free carboxyl groups can also be derived from inorganic bases such as, for example, sodium, potassium, ammonium, calcium, or ferric hydroxides, and such organic bases as isopropylamine, trimethylamine, histidine, procaine and the like. Upon formulation, solutions will be administered in a manner compatible with the dosage formulation and in such amount as is therapeutically effective. The formulations are easily administered in a variety of dosage forms such as injectable solutions, drug-release capsules, and the like.

As used herein, “carrier” includes any and all solvents, dispersion media, vehicles, coatings, diluents, antibacterial and antifungal agents, isotonic and absorption delaying agents, buffers, carrier solutions, suspensions, colloids, and the like. The use of such media and agents for pharmaceutical active substances is well known in the art. Supplementary active ingredients can also be incorporated into the compositions. The phrase “pharmaceutically-acceptable” refers to molecular entities and compositions that do not produce an allergic or similar untoward reaction when administered to a host.

Delivery vehicles such as liposomes, nanocapsules, microparticles, microspheres, lipid particles, vesicles, and the like, may be used for the introduction of the compositions of the present disclosure into suitable host cells. In particular, the rAAV vector delivered transgenes may be formulated for delivery either encapsulated in a lipid particle, a liposome, a vesicle, a nanosphere, or a nanoparticle or the like.

Such formulations may be preferred for the introduction of pharmaceutically acceptable formulations of the nucleic acids or the rAAV constructs disclosed herein. The formation and use of liposomes are generally known to those of skill in the art. Recently, liposomes were developed with improved serum stability and circulation half-times (U.S. Pat. No. 5,741,516). Further, various methods of liposome and liposome like preparations as potential drug carriers have been described (U.S. Pat. Nos. 5,567,434; 5,552,157; 5,565,213; 5,738,868 and 5,795,587).

Liposomes have been used successfully with a number of cell types that are normally resistant to transfection by other procedures. In addition, liposomes are free of the DNA length constraints that are typical of viral-based delivery systems. Liposomes have been used effectively to introduce genes, drugs, radiotherapeutic agents, viruses, transcription factors and allosteric effectors into a variety of cultured cell lines and animals. In addition, several successful clinical trials examining the effectiveness of liposome-mediated drug delivery have been completed.

Liposomes are formed from phospholipids that are dispersed in an aqueous medium and spontaneously form multilamellar concentric bilayer vesicles (also termed multilamellar vesicles (MLVs). MLVs generally have diameters of from 25 nm to 4 μm. Sonication of MLVs results in the formation of small unilamellar vesicles (SUVs) with diameters in the range of 200 to 500 Å, containing an aqueous solution in the core.

Alternatively, nanocapsule formulations of the rAAV may be used. Nanocapsules can generally entrap substances in a stable and reproducible way. To avoid side effects due to intracellular polymeric overloading, such ultrafine particles (sized around 0.1 μm) should be designed using polymers able to be degraded in vivo. Biodegradable polyalkyl-cyanoacrylate nanoparticles that meet these requirements are contemplated for use.

In addition to the methods of delivery described above, the following techniques are also contemplated as alternative methods of delivering the rAAV compositions to a host. Sonophoresis (i.e., ultrasound) has been used and described in U.S. Pat. No. 5,656,016 as a device for enhancing the rate and efficacy of drug permeation into and through the circulatory system. Other drug delivery alternatives contemplated are intraosseous injection (U.S. Pat. No. 5,779,708), microchip devices (U.S. Pat. No. 5,797,898), ophthalmic formulations (Bourlais et al., 1998), transdermal matrices (U.S. Pat. Nos. 5,770,219 and 5,783,208) and feedback-controlled delivery (U.S. Pat. No. 5,697,899).

Therapeutic Methods

As disclosed herein, isolated nucleic acids, rAAVs, and compositions described herein are useful for treating a subject having or suspected of having FOP. In some embodiments, aspects of the present disclosure provide methods of inhibiting heterotopic ossification in a subject. In some embodiments, aspects of the present disclosure provide methods of improving flare-up conditions in a subject having or suspected of having FOP. In some embodiments, aspects of the present disclosure provide methods of inhibiting ACVR1 expression in a cell.

As used herein, the term “treating” refers to the application or administration of a composition as described herein to a subject, who has a disease associated with heterotopic ossification (HO), such as FOP, a symptom of a disease associated with heterotopic ossification (HO), such as FOP, or a predisposition toward a disease associated with heterotopic ossification (HO), such as FOP (e.g., one or more mutations in a gene associated with FOP, such as AVCR1), with the purpose to cure, heal, alleviate, relieve, alter, remedy, ameliorate, improve, or affect the disorder, the symptom of the disease, or the predisposition toward the disease.

Alleviating a disease includes delaying the development or progression of the disease, or reducing disease severity. Alleviating the disease does not necessarily require curative results. As used therein, “delaying” the development of a disease (such as a disease associated with HO) means to defer, hinder, slow, retard, stabilize, and/or postpone progression of the disease. Ibis delay can be of varying lengths of time, depending on the history of the disease and/or individuals being treated. A method that “delays” or alleviates the development of a disease, or delays the onset of the disease, is a method that reduces probability of developing one or more symptoms of the disease in a given time frame and/or reduces extent of the symptoms in a given time frame, when compared to not using the method. Such comparisons are typically based on clinical studies, using a number of subjects sufficient to give a statistically significant result. “Development” or “progression” of a disease means initial manifestations and/or ensuing progression of the disease. Development of the disease can be detectable and assessed using standard clinical techniques as well known in the art. However, development also refers to progression that may be undetectable. For purpose of this disclosure, development or progression refers to the biological course of the symptoms. “Development” includes occurrence, recurrence, and onset. As used herein “onset” or “occurrence” of a disease associated with heterotopic ossification (HO), such as FOP, includes initial onset and/or recurrence.

In some embodiments, the therapeutic methods as disclosed in this section comprise administering to a subject in need thereof an isolate nucleic acid, a recombinant AAV (rAAV), a recombinant gene editing complex, or a vector, comprising a transgene as disclosed herein. A rAAV may comprise a modification that promotes its targeting to skeletal muscle or connective tissues. In some embodiments, the therapeutic methods as disclosed herein comprise administering to a subject a rAAV comprising a capsid protein and an isolated nucleic acid encoding an inhibitory nucleic acid. The rAAV may comprise an inhibitory nucleic acid (e.g., siRNA, shRNA, miRNA, or amiRNA). The inhibitory nucleic acid may decrease or increase expression of a target gene associated with FOP. In some embodiments, the rAAV or isolated nucleic acid comprises a transgene encoding an artificial microRNA that targets a gene associated with heterotopic ossification or the development of FOP. In some embodiments, the target gene is AVCR1. In some embodiments, the target gene is a mutated AVCR1.

Expression of ACRV1 in a cell or subject may be decreased by between 50% and 99% (e.g., any integer between 50% and 99%, inclusive) using methods of the present disclosure. Expression of ACVR1 in a cell or subject may be decreased by between 75% and 90% using methods of the present disclosure. Expression of ACVR1 in a cell or subject may be decreased by between 80% and 99% using methods of the present disclosure.

Heterotopic ossification may be inhibited by between 50% and 99% (e.g., any integer between 50% and 99%, inclusive) using methods of the present disclosure. Flare-up conditions in a subject having or suspected of having FOP may be inhibited by between 50% and 99% (e.g., any integer between 50% and 99%, inclusive) using methods of the present disclosure. Without wishing to be bound by any theory, flare-up conditions refer to an exacerbation of a chronic disease such as FOP.

As disclosed herein. “identity” of sequences refers to the measurement or calculation of the percent of identical matches between two or more sequences with gap alignments addressed by a mathematical model, algorithm, or computer program that is known to one of ordinary skill in the art. The percent identity of two sequences (e.g., nucleic acid or amino acid sequences) may, for example, be determined using Basic Local Alignment Search Tool (BLAST®) such as NBLAST® and XBLAST® programs (version 2.0). Alignment technique such as Clustal Omega may be used for multiple sequence alignments. Other algorithms or alignment methods may include but are not limited to the Smith-Waterman algorithm, the Needleman-Wunsch algorithm, or Fast Optimal Global Sequence Alignment Algorithm (FOGSAA).

In some embodiments, an “effective amount” of a substance is an amount sufficient to produce a desired effect (e.g., to transduce bone cells or bone tissue). In some embodiments, an effective amount of an isolated nucleic acid is an amount sufficient to transfect (or infect in the context of rAAV-mediated delivery) a sufficient number of target cells of a target tissue of a subject. In some embodiments, a target tissue is skeletal muscle or connective tissues. In some embodiments, an effective amount of an isolated nucleic acid (e.g., which may be delivered via an rAAV) may be an amount sufficient to have a therapeutic benefit in a subject, e.g., to inhibit heterotopic ossification, to improve flare-up conditions, etc. The effective amount will depend on a variety of factors such as, for example, the species, age, weight, health of the subject, and the tissue to be targeted, and may thus vary among subject and tissue as described elsewhere in the disclosure.

Exemplary embodiments of the invention will be described in more detail by the following examples. These embodiments are exemplary of the invention, which one skilled in the art will recognize is not limited to the exemplary embodiments.

EXAMPLES Example 1: Generation of AAV Vector Genome for Gene Addition or Gene Silencing

It has been reported that about 97% FOP is caused by a heterozygous, gain of function mutation of ACVR1 (G>A, R206H). To replace human ACVR1′² with human wildtype ACVR1 (ACVR1^(WT)), a codon-optimized version of the human ACVR1 complementary DNA (ACVR1^(opt), 74% nucleotide identity compared to wild-type coding sequence) was designed and cloned into the AAV vector genome containing the chicken b-actin promoter (CBA, FIG. 2A). Specifically, gene addition strategy was initiated by generating AAV vector genome that expresses codon-optimized, wild type human ACVR1 cDNA (opt-ACVR1, ˜1.5 kb) under the chicken beta-actin (CBA) promoter (FIG. 2 ). The CBA intron (1080 bp) was substituted by either the MBL intron (384 bp) or the synthetic intron (172 bp) to reduce the vector genome size (FIG. 2A). Immunoblotting analysis demonstrated that all of three introns were able to express opt-ACVR1 protein in HEK293 cells under the CBA promoter (FIG. 2B). Since it has been reported that high levels of AAV-delivered shRNAs can perturb the RNAi machinery and cause off-target silencing effects, the guide strand of a small silencing RNA was inserted into mouse miR-33-derived miRNA scaffold (artificial miRNA, amiR) to improve conventional shRNA-related toxicity and off-target silencing. Therefore, AAV vector genome expressing 12 artificial miRNAs (amiRs) that target different sequence sites of human ACVR1-R206H mRNA under the CBA promoter was generated for gene silencing (FIG. 3A). Additionally, amiR-sensor plasmids containing renilla luciferase reporter gene followed by miRNA binding sites specific to human ACVR1-R206H, ACVR1-WT, or ACVR1-opt (codon optimized) were generated to screen which amiRs are effective to knockdown human ACVR1-R206H mRNA without any decrease in human ACVR1-WT and/or ACVR1-opt mRNA levels (FIG. 3B). ACVR1-R206H activity was markedly reduced by the expression of most of the amiRs, except for RH8 and 12 while these amiRs showed little to no effect on opt-ACVR1 luciferase activity. In this design, the amiR was inserted intronically between the CBA promoter and the mCherry reporter gene, which allows for visual tracking of positively transduced cells. amiR-R206Hs targeting ACVR1^(R206H), not ACVR1^(WT) or ACVR1^(opt) were screened by measuring Renilla activity of the sensor plasmids that represent the silencing efficiency (FIG. 3C). Among these amiRs, four amiRs, including RH3, 5, 9, and 11, induced significant decrease in ACVR1-WT activity (FIG. 3C). Immunoblotting analysis further confirmed that protein levels of ACVR1-R206H were substantially reduced by amiR-RH1, 2, 4, 5, 6, and 7 compared to amiR-ctrl and amiR-RH9, 10, and 11. Of note, both WT- and opt-ACVR1 expression was not affected by these amiRs (FIG. 3D, FIGS. 30A and 30B). These results identified amiR-RH6 and amiR-RH7 as the most effective gene silencers targeting of ACVR1^(R206H), but not ACVR1^(WT) and ACVR1^(opt). Since levels of ACVR1-R206H mRNA were most reduced by amiR-RH6 and -RH7, these amiRs were used on for further experiments.

Example 2: Generation of AAV Vector Genome for Gene Replacement

For the gene replacement strategy, four AAV vector genomes containing the combination of the CBA promoter, synthetic or MBL intron, amiR-ACVR1.RH6 or RH7, and codon optimized (opt-) ACVR1 was generated (FIG. 4A). Similar to the gene silencing plasmids, these plasmids were also effective to decrease ACVR1-R206H luciferase activity without affecting ACVR1-WT activity (FIG. 4B). Unlike an increased luciferase activity of ACVR1-OPT, immunoblotting analysis showed no difference in protein levels of opt-ACVR1 (FIG. 4C), indicating that amiR-RH6 or amiR-RH7 in these plasmids does not affect opt-ACVR1 expression. BRE-luciferase activity was markedly decreased in the presence of these plasmids, compared to vector control, demonstrating their ability to suppress Activin A-induced luciferase activity (FIG. 4D).

Example 3: Screening of rAAV Serotypes Effective for In Vitro Transduction of Multiple Cells

To identify the best AAV serotype for transducing cells responsible for FOP in vitro, an scAAV vector construct expressing the enhanced green fluorescent protein (Egfp) reporter gene was packaged into 14 conventional AAV capsids (AAV1, AAV2, AAV3, AAV4, AAV5, AAV6, AAV6.2, AAV7, AAV8, AAV9, AAVrh.8, AAVrh.10, AAVrh.39, and AAVrh.43) and incubated with human FOP patient dermal fibroblast-derived inducible pluripotent stem cells (FOP-iPSC), mouse muscle myoblast line (C2C12), human bone marrow-derived stromal cells (BMSC), or human adipose tissue-derived stromal cells (ASC). Expression of EGFP in transduced cells was assessed by fluorescence microscopy (FIG. 5 ) and immunoblotting with an anti-EGFP antibody (FIG. 8G). While almost all of AAV serotype vectors transduced C2C12 cells, only five AAV serotype vectors, including rAAV2, rAAV3b, rAAV5, rAAV6, and rAAV6.2 were able to transduce human FOP-iPSCs. Among these, rAAV2, rAAV5, rAAV6, and rAAV6.2 also transduced human BMSCs and ASCs. Of note, rAAV9 shows a low transduction efficacy to human FOP-iPSC, ASC, and C2C12 cells.

Given that rAAV6.2, an rAAV6-F129L mutant, is the most effective serotype transducing all of four cell types in vitro and that rAAV9 can transduce human BMSCs as well as mouse skeleton, the ability of rAAV6.2 and rAAV9 to transduce heterotopic bone-residing cells in the skeletal muscle was examined in a mouse model of heterotopic ossification (HO).

Tie2-Cre lineage-labeling experiments demonstrated that Tie2-expressing cells were present at all stages of HO, including fibroproliferative, chondrogenic, and osteogenic stages, and they contribute to heterotopic cartilage and bone formation after BMP ligand implantation and following muscle injury in the skeletal muscle. These cells are a sub-population of fibro/adipogenic cells (FAPs), discovered for their adipogenic and fibrogenic capacities. To visualize Tie2+ lineage cells in the heterotopic bone using tdTomato expression, Tie2-cre mice were crossed with the Cre reporter Ai9 mice and treated with intramuscular (i.m.) injection of recombinant BMP2/7, following muscle injury in the skeletal muscle (FIG. 6 ). Four days (fibroproliferative stage) or eight days (pre-osseous analgen stage) later, rAAV6.2 or rAAV9 expressing EGFP was intramuscularly injected, respectively. Twenty four days after the HO induction, HO was assessed by X-radiography (FIGS. 6A and C) and AAV-transduced cells residing in the heterotopic bone were visualized using fluorescence microscopy (FIGS. 6B and D). While both of rAAV6.2 and rAAV9 are effective for transduction of HO-residing cells and skeletal muscle, only a sub-population of Tie2-expressing cells was transduced by these AAV vectors (FIGS. 6B and D), the AAV vector genome that contains the CBA promoter, MBL intron, amiR-RH6 or -RH7, and opt-ACVR1, developed for gene replacement (FIG. 4A), was packaged into AAV6.2 or AAV9 capsid (FIG. 7A) and their AAV genome integrity was validated (FIG. 7B). Since rAAV6.2 shows a higher in vitro transduction efficiency to human FOP-iPSCs than rAAV9 (FIG. 5 ), AAV's functional validation was performed using rAAV6.2 vectors (FIG. 8 ). To examine the ACVR1-R206H mutant allele-specific silencing efficiency of amiR-RH6 or amiR-RH7 in human FOP-iPSCs, mRNAs extracted from AAV-transduced cells were subjected to next generation sequencing (FIG. 8A). Compared to amiR-ctrl-treated cells showing the transcript ratio of R206H to WT allele as 65.4% vs. 34.6%, the transcript ratio was altered by 47.1% vs. 52.9% and 20.9% vs. 79.1%, when treated with rAAV6.2 carrying amiR-RH6 or amiR-RH7, respectively. This result demonstrates that amiR-RH7 is more effective for the ACVR1-R206H mutant allele-specific silencing in human FOP-iPSCs than amiR-RH6. Of note, rAAV6.2 carrying amiR-RH7 and opt-ACVR1 also showed higher expression of codon-optimized, wild type ACVR1 mRNA in human FOP-iPSCs, compared to rAAV6.2 carrying amiR-RH6 and opt-ACVR1, while no ACVR1 expression was detected in rAAV6.2.amiR-ctrl-treated cells (FIG. 8B). Accordingly, treatment with the vectors resulted in a significant decrease in alkaline phosphatase (early osteogenic marker) and mineralization activities (late osteogenic marker) in comparison with rAAV6.amiR-ctrl (FIG. 8C and FIG. 8D), while mRNA levels of osteoblast marker genes, including type 1 collagen and bone sialoprotein, were markedly reduced by rAAV6.2 carrying amiR-RH7 and opt-ACVR1, not by rAAV6.2 carrying amiR-RH6 and opt-ACVR1 or rAAV6.2.amiR-ctrl (FIG. 8E). Thus, this result indicates that rAAV6.2 carrying amiR-RH7 and opt-ACVR1 is potent to replace the ACVR1-R206H with wild type ACVR1, thereby suppressing osteogenesis of FOP-iPSCs. rAAV6.2 vectors carrying control vector, amiR-RH6.ACVR1^(opt), or amiR-RH7.ACVR1^(opt) were then transduced into human FOP iPSCs and their expression and silencing efficiency and accuracy were examined using RT-PCR, next-generation sequencing (NGS), and whole transcriptome analysis. While 65.4% ACVR1^(R206H) vs. 34.6% ACVR1^(opt) transcripts are expressed in control-expressing cells, the transcript pattern was substantially changed to 36.7% vs. 63.3% and 39.5% vs. 60.5% in cells expressing amiR-RH6.ACVR1^(opt) and amiR-RH7.ACVR1^(opt), respectively (FIG. 8F, top). ACVR1^(opt) expression was also confirmed in these cells (FIG. 8F, bottom) relative to control cells expressing EGFP (as shown in FIG. 15A).

To examine the ability of amiR-RH6.ACVR1^(opt) or amiR-RH7.ACVR1^(opt) to suppress osteogenic potentials of human FOP iPSCs, alkaline phosphatase (ALP) activity, alizarin red staining, and osteogenic gene expression of treated cells were examined (FIGS. 8E and 8H). WT iPSCs were also generated from healthy donors and used as negative controls. These results demonstrate that amiR-RH6.ACVR1^(opt) and amiR-RH7.ACVR1^(opt) are both effective in inhibiting osteogenesis of FOP iPSCs while no effect or slight increase in osteogenesis of WT iPSCs. Thus, these AAV vectors are likely to act specific to human FOP cells.

It has been previously reported that ACVR1^(R206H) mutation confers activation of Smad1/5/8-mediated BMP signaling in response to activin A, whereas no BMP signaling normally occurs via ACVR1^(WT) receptor. In control-expressing FOP iPSCs, activin A treatment significantly upregulated expression of BMP-responsive genes, ID1 and MSX2, and this induction was abolished in cells expressing amiR-RH6.ACVR1^(opt) or amiR-RH7.ACVR1^(opt) (FIG. 8I and FIG. 31 ). These results were further evaluated and confirmed by using fibro/adipogenic progenitors (FAPs), a major cell-of-origin of HO in a humanized knock-in mouse model of FOP. Activin A-induced osteogenesis was examined in a subset of FAPs isolated from the skeletal muscle of Acvr1^((R206H)Fl);PDGFRα mice using cell surface markers (PDGFRα⁺ScaI⁺CD31⁻CD45⁻), demonstrating a significant decrease in activin A-induced ALP activity and osteogenic gene expression when treated with amiR-RH6.ACVR1^(opt) or amiR-RH7.ACVR1^(opt) (FIGS. 8J and 8K).

To examine the ability of systemically injected rAAV6.2 to transduce skeletal muscle, rAAV6.2 expressing EGFP (rAAV6.2.egfp) was intravenously (i.v.) injected into 2 month old wild type mice and two weeks later, individual organ imaging was performed, demonstrating strong EGFP expression in the liver, while no expression was detected in the skeletal muscle (FIG. 9 , left). vascular permeability agents, including human VEGF-166 and sodium heparin, improved rAAV6.2's ability to transduce heart and skeletal muscle (FIG. 9 , middle). However, compared to rAAV6.2, intravenous injection of rAAV9 even in the absence of vascular permeability agents was highly effective for the transduction of heart and skeletal muscle (FIG. 9 , right). Thus, rAAV9 capsid was used to deliver the gene replacement machinery to a mouse model of FOP. ACVR1(R206H)FIEx mice carrying a Cre recombinase-dependent conditional-on knock-in allele of human ACVR1-R206H were crossed with ERT2-Cre mice expressing a tamoxifen-induced Cre recombinase (ACVR1(R206H)FIEx;ERT-Cre) in order to generate an inducible mouse model of FOP. As previously reported, spontaneous HO develops at multiple areas ten weeks after tamoxifen treatment. Compared to amiR-ctrl-treated mice with multiple HO sites, almost no HO sites were detected in FOP mice when treated with rAAV9 carrying amiR-RH6 or -RH7 and opt-ACVR1 (FIG. 10 ). These results demonstrate that systemically delivered AAV9 vectors are effective for the replacement of ACVR1-R206H mutant mRNA with codon-optimized, wild type ACVR1 mRNA in the skeletal muscle, and suppressed the development of spontaneous HO in vivo. Thus, gene replacement using the rAAV9.amiR-RH6.opt-ACVR1 or amiR-RH7.opt-ACVR1 vector may be a promising approach for the treatment of HO.

Example 4: Generation of AAV Vector Genome for Gene Editing

Cas9-based adenine base editor (ABE) compatible to rAAV has been developed to directly convert a target base pair to a different base pair without creating double-stranded DNA breaks. Thus, rAAV9-compatible ABE construct was developed to convert “A” into “G” in the ACVR1-R206H allele. The ABE was divided into halves that are smaller than the AAV packaging size limit (˜4.7 kb) using a trans-splicing intein sequence, which enabled dual-AAV packaging of base editors. The N-terminal ABE construct contained protospacer bearing the R206H mutation site. The C-terminal ABE construct was packaged into AAV6.2 or AAV9 capsid (FIG. 11 ).

Example 5: Generation of the AAV Vector Genome Responding to Inflammatory Cytokines and/or BMPs

It has been shown that inflammation and activin A play a role in HO. Macrophages and mast cells are highly abundant in the areas of developing HO in a mouse model of FOP and when depleted, HO was markedly reduced. In a mouse model of trauma-induced HO, Achilles' tenotomy and dorsal burn resulted in upregulation of inflammatory cytokines, including TNF and IL-1β within 48 hours after injury, while elevation of MCP1 and VEGF was persistent in saliva one week after injury. As levels of activin A, BMP ligands, and inflammatory cytokines are elevated in the area of flare-up, rAAV9 vectors that can secret a natural activin A antagonist, soluble follistatin (sFST), and a natural TNF antagonist, soluble TNFR2 (sTNFR2), in response to flare-up were generated. Local or systemic injection of rAAV9 is highly effective for the transduction of skeletal muscle, which produces sFST and sTNFR2 in the area of flare-up, suppressing the development of neighboring HO (FIG. 12 ). To this end, the promoters containing endogenous BMP-responsive elements (BRE, EndoID1-BRE) and NF-kB-binding sites (pNF-kB) were cloned into the AAV vector genome encoding Gaussia reporter gene (eBRE/NF-kB-Luc, FIG. 13A). Luciferase activity was substantially increased in a dose-dependent manner when stimulated with inflammatory cytokines, including TNF and IL-1β recapitulating induction kinetics seen in a conventional NF-kB-responsive reporter gene PB2-luc (FIG. 13B). Like a conventional BMP-responsive reporter gene BRE-luc, this reporter gene was also responsive to recombinant BMP4 (FIG. 13C). Additive increase of luciferase activity was observed in the eBRE/NF-kB-Luc when treated with both inflammatory cytokines and BMP4 (FIG. 13D). These results indicates the eBRE/NF-kB-Luc as a promising sensor plasmid that can respond to elevated levels of inflammatory cytokines and activin A/BMPs in the areas of flare-up.

Example 6: Generation of the AAV Vector Genome that Produces Soluble Follistatin (FST-288) and TNFR2

It has been previously reported that follistatin and sTNFR2 competitively bind activin A and TNFα against their cognate receptors and therefore, suppress activin A- and TNFα-induced signal transduction, respectively. Thus, a natural activin A antagonist, soluble human follistatin (FST-288) and a natural TNF antagonist, soluble human TNFR2 were cloned into the AAV vector genome under the chicken β-actin promoter (CB) (FIG. 14A). However, following systemic delivery, rAAV9 vectors also target liver, heart, and skeletal muscle, in addition to bone, which may cause untoward effects. To circumvent this, tissue-specific, endogenous miRNAs to repress rAAV expression in liver was developed, by engineering perfectly complementary miR-122-binding sites into the AAV vector genome. Silencing of transgene expression in liver exploited the natural expression of the abundant (>60,000 copies/cell) miRNAs, miR-122, which is expressed in hepatocytes, and miR-1, a miRNA found in the heart and skeletal muscle of virtually all animals. Complementary site for miR-122 was inserted into the 3′ untranslated region (UTR) of the transgenes (FIG. 14A). To test whether sTNFR2 and FST-288 produced from the AAV vector genome can inhibit TNF- and activin A-induced signal transduction, control vector or the AAV vector genome was transfected into HEK293 cells and the supernatant was harvested from these cells. Compared to control supernatant, TNF- and activin A-induced activation was both markedly reduced in the presence of sTNFR2 and sFST-producing supernatant (FIG. 14B). Next, the CB promoter in this plasmid will be replaced with the eBRE/NF-kB promoter, which enables to produce secreted TNFR2 and FST-288 in response to inflammatory cytokines and activin A.

Example 7: In Vitro and In Vivo Studies

This example describes novel gene therapeutics that can prevent disabling FOP pathology. Direct muscle administration of rAAVs (e.g., as described in the Examples above) carrying gene replacement by exogenous expression of healthy ACVR1, Acvr1R206H allele-specific silencing, or the combination of gene replacement and silencing, markedly decreased trauma-induced heterotopic ossification (HO) in mice harboring a human Acvr1R206H knock-in allele. Additionally, the AAV vectors also suppressed traumatic HO in the skeletal muscle when systemically administered at infant stages. Fibrosis, chondrogenesis, and ossification in the injury sites were all substantially decreased in AAV-treated muscle, while inflammation normally occurred. It was also observed that systemic delivery of a rAAV9 vector carrying the combination of gene replacement and silencing was effective for preventing chronic HO in both juvenile and adult FOP mice, as shown by reversal of progressive HO, jaw ankylosis, osteoporosis, short stature, and weight loss. It was also observed that delivery of rAAV9 vectors to skeletal muscle via intradermal (id) injection using a micro needle (e.g., microject 600) was effective to transduce FOP-causing cells in the skeletal muscle, alleviating concerns about intramuscular injections inducing HO in FOP patients.

FIGS. 15A-15D show AAV-gene therapeutics reverses enhanced osteogenesis by ACVR1-R206H mutation. FIG. 15A shows 5×10¹⁰ GC of AAV6.2 vectors carrying ctrl, amiR-RH6.optACVR1, or amiR-RH7.optACVR1 were transduced to human FOP-iPSCs for 2 days and cultured under osteogenic conditions for 4 days. Total RNA was subjected for cDNAs synthesis, followed by RT-PCR for Egfp expression. FIG. 15B and FIG. 15D show total RNA was subjected for RNA sequencing and a volcano plot comparing the gene expression for up/downregulated genes in the cells expressing amiR-RH6.optACVR1 relative to amiR-RH7.optACVR1 was produced. In comparison with control vector, treatment with amiR-RH6.ACVR1^(opt) or amiR-RH7.ACVR1^(opt) upregulated 45 or 140 genes and downregulated 27 or 87 genes, respectively (FIG. 15D). FIG. 15C shows Sca1⁺PDGFRa⁺CD31⁻CD45⁻ fibroadipogenic progenitors (FAPs) were FACS sorted from tibial muscle of 4 week old Acvr1R^(206H);PDGFRa mice and treated with 5×10¹⁰ GC of the AAV6.2 vectors carrying ctrl, amiR-RH6.optACVR1, or amiR-RH7.optACVR1. Two days later, AAV-treated cells were cultured under osteogenic conditions with PBS or Activin A (50 ng/ml) for six days and osteogenic gene expression was assessed by RT-PCR.

FIGS. 16A-16C show effects of AAV-gene therapeutics on Activin A-induced osteogenesis in vitro. FIG. 16A shows primary bone marrow-derived stromal cells (BMSCs) were isolated from 4 week old Acvr1R²⁰⁶;Prx1 femurs and treated with 5×10¹⁰ GC of the AAV6.2 vectors carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1. Two days later, AAV-treated cells were cultured under osteogenic conditions for four days, stimulated with Activin A (100 ng/ml) for 6 or 24 hours and expression of Activin A-responsive genes Id1 and Msx2 was assessed using RT-PCR, respectively. FIGS. 16B-16C show AAV-treated cells were cultured under osteogenic conditions with PBS or Activin A (50 ng/ml), and ALP (FIG. 16B) and alizarin red staining (FIG. 16C) were performed to assess osteoblast differentiation at 6 and 12 days of osteogenic culture, respectively.

FIGS. 17A-17I show effects of AAV-gene therapeutics on Activin A signaling and traumatic heterotopic ossification. FIGS. 17A-17D show primary bone marrow-derived stromal cells (BMSCs) were isolated from 4 week old Acvr1R^(206H);Prx1 femurs and treated with 5×10¹⁰ GC of the AAV6.2 vectors carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1. Two days later, AAV-treated cells were cultured under osteogenic conditions for four days and Acvr1^(R206H) and optAcvr1 mRNA levels were measured by RT-PCR (FIG. 17A). AAV-treated cells were stimulated with Activin A (100 ng/ml) for 30 min and immunoblotted for phospho-Smad1/5. Anti-Gapdh antibody was used for loading control (FIG. 17B). AAV-treated cells were cultured under osteogenic conditions with PBS or Activin A (50 ng/ml), and ALP (FIG. 17C, left) and alizarin red staining (FIG. 17C, right) were performed to assess osteoblast differentiation at 6 and 12 days of osteogenic culture, respectively. AAV-treated cells were cultured under osteogenic conditions with PBS or BMP4 (50 ng/ml) for 12 days, and alizarin red staining (FIG. 17C, right) was performed for mineralization (FIG. 17D). FIG. 17E shows 5×10¹² vg/kg of rAAV9 expressing EGFP was intradermally (i.d.) injected into the femoral muscle of 2 month old male Tie2-cre;Ai9 mice (n=3) one week after rBMP2/7-matrigel injection and muscle injury, and X-radiography of hindlimbs (left top) and frozen-section of HO tissues (left bottom, right) were performed in treated mice. Red box indicates HO in the skeletal muscle. M, muscle; HO-BM, heterotopic ossification bone marrow. Blue, DAPI; Red, Tie2⁺ cells; Green, AAV-transduced cells. FIGS. 17F-17G show 5×10¹² vg/kg of rAAV9 expressing vector or CRE recombinase was i.d. injected into the tibial muscle of 6 week old female Acvr1R^(206H);Cre-ER^(T2) mice (n=8) and two days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites. Four weeks later, Acvr1^(R206H) and CRE recombinase mRNA levels in the tibial muscle were measured by RT-PCR (FIG. 17F) and HO in the tibial muscle was assessed using X-radiography and microCT. 3D reconstruction images (FIG. 17G, left) and quantification of HO volume are displayed (FIG. 17G, right). FIG. 17H shows 5×10¹² vg/kg of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 was i.d. injected into the tibial muscle of 6 week old male Acvr1R^(206H);Cre-ER^(T2) mice (n=8) two days after five times intraperitoneal (i.p.) injection of tamoxifen (10 mg/kg). Two days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites and four weeks later, and HO in the tibial muscle was assessed using microCT. 3D reconstruction images (left) and quantification of HO volume is displayed (right). FIG. 17I shows 5×10¹² vg/kg of rAAV9 expressing ctrl or amiR-RH6.optACVR1 was i.d. injected into the femoral muscle of 2 month old male wildtype mice (n=5) and two days later, rBMP2/7-matrigel injection and muscle injury were employed into the injection sites. Four weeks later, HO in the femoral muscle was assessed using X-radiography and microCT. 3D reconstruction images (left) and quantification of HO volume is displayed (right).

FIGS. 18A-18F show assessment of traumatic heterotopic ossification in AAV-treated skeletal muscle. FIGS. 18A-18B show a diagram of the study and treatment design. 5×10¹² vg/kg of rAAV6.2 expressing EGFP was i.d. injected into the femoral muscle of 2 month old male wildtype mice (n=3) one week after rBMP2/7-matrigel injection and muscle injury, and X-radiography of hindlimbs (FIG. 18B, left) and frozen-section of HO tissues (FIG. 18B, right) were performed in treated mice. Box indicates HO in the skeletal muscle. FIGS. 18C-18D show a diagram of additional study and treatment designs. FIG. 18E shows 5×10¹² vg/kg of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 was i.d. injected into the tibial muscle of 6 week old male Acvr1R206H;Cre-ERT2 mice (n=8) Three days after five times intraperitoneal (i.p.) injection of tamoxifen (10 mg/kg). Three days later, pinch injury and 1 μM cardiotoxin were employed into the injection sites and four weeks later, and Acvr1R206H and optAcvr1 mRNA levels were measured by RT-PCR (right). FIG. 18F shows a diagram of an additional study and treatment design.

FIGS. 19A-19F show systemic delivery of AAV-gene therapeutics prevents traumatic heterotopic ossification in adult FOP mice. FIGS. 19A-19B show P1 PDGFRa-GFP neonates (n=3) were treated with 10¹¹ GC of rAAV9 expressing mCherry via facial vein injection and two weeks later, tissue distribution of vectors was assessed by mCherry expression using IVIS-100 optical imaging system (FIG. 19A) or frozen section of AAV-treated hindlimbs (FIG. 19B). BM: bone marrow. FIGS. 19C-19E show P1 Acvr1R^(206H);Cre-ER^(T2) neonates (n=10) were treated with 10¹¹ GC of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 via facial vein injection, and six weeks later, mice were treated five times with i.p. injection of tamoxifen (10 mg/kg). Two days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites and four weeks later, and Acvr1^(R206H) and optAcvr1 mRNA levels were measured by RT-PCR (FIG. 19C). HO in the tibial muscle was assessed using microCT or histology. 3D reconstruction images (FIG. 19D, left) and quantification of HO volume is displayed (FIG. 19D, right). Heterotopic bone mass and chondrogenic anlagen were both markedly decreased by the treatment with ACVR1^(opt) or amiR-RH6.ACVR1^(opt) relative to control vector, whereas therapeutic effects of amiR-RH6 were highly variable (FIG. 19D and FIG. 29A). amiR-RH6.ACVR1^(opt) was most effective in suppression of traumatic HO and nearly complete regeneration and reestablishment of normal muscle architecture.

It has been previously shown that muscle injury in a mouse model of FOP induces the major sequential pathological changes in HO, including perivascular immune cell infiltration (Day 1-3), muscle degeneration and fibroproliferative response (Day 3-7), chondrogenesis (Day 7-14), and osteogenesis with heterotopic bone marrow (Day 14-28). FIG. 19E shows representative histology data. P1 Acvr1^((R206H)Fl);Cre-ER^(T2) neonates treated with control vector or amiR-RH6.ACVR1^(opt) were aged to 6 weeks old and then, X-radiography and histopathological evaluation at different time points were performed four weeks after muscle injury (FIG. 19F and FIG. 29B). FIG. 19F shows P1 Acvr1R^(206H);Cre-ER^(T2) neonates (n=3) were treated with 10¹¹ GC of rAAV9 carrying ctrl or amiR-RH6.optACVR1 via facial vein injection, and six weeks later, mice were treated five times with i.p. injection of tamoxifen (10 mg/kg). Three days later, pinch injury and 1 mM cardiotoxin were employed into the injection sites and 3, 7, 14, 28 days later, HO in the tibial muscle was assessed by X-radiography. Boxes indicate HO in the tibial muscle. As expected, chondrogenic anlagen and heterotopic bone develops in control-treated muscle seven and fourteen days after the injury, respectively. However, amiR-RH6.ACVR1^(opt)-treated muscle showed little to no evidence of cartilage and heterotopic bone formation, but fibroproliferative responses at day 7 that began to disappear fourteen days after the injury. Early injury responses at day 3, including infiltration of inflammatory macrophages and mast cells, muscle degeneration, and fibroproliferation, were relatively comparable between the tibial muscles treated with control and amiR-RH6.ACVR1^(opt) (FIGS. 28B and 29C).

FIGS. 20A-20G show systemic delivery of AAV-gene therapeutics prevents traumatic heterotopic ossification. FIG. 20A shows a diagram of study and treatment design. FIGS. 20B-20C show P1 PDGFRα-GFP neonates (n=3) were treated with 1011 GC of rAAV9 expressing mCherry via facial vein injection and two weeks later, PDGFRα expression was assessed by IVIS-100 optical imaging system using GFP expression (FIG. 20B). AAV-transduced cells in the hindlimbs were also assessed by mCherry expression in the hindlimbs using fluorescence microscopy. IVIS-100 optical imaging system (FIG. 20B) or frozen section of AAV-treated hindlimbs (FIG. 20C). BM: bone marrow. FIG. 20D shows P1 wildtype neonates (n=3) were treated with 10¹¹ GC of rAAV9 expressing LacZ via facial vein injection and two weeks later, frozen-sections of AAV-transduced tissues were stained for X-galactosidase. BM: bone marrow, CB: cortical bone, M: muscle. FIG. 20F shows a diagram of a study and treatment methods design. FIG. 20G shows a diagram of a study and treatment methods design. mCherry expression was detected in a subset of PDGFRα⁺ FAPs in the skeletal muscle and PDGFRα⁺ osteoblasts and osteocytes in the cortical bone (FIG. 31 ) along with the expression in the heart, lung, liver, and kidney (FIG. 20E).

FIGS. 21A-21J show systemic delivery of AAV-gene therapeutics prevents chronic heterotopic ossification in adult FOP mice. FIG. 21A shows 5×10¹³ vg/kg of rAAV9 carrying ctrl or amiR-RH6.optACVR1 was i.v. injected into 6 week old Acvr1R^(206H);Cre-ER^(T2) mice (n=10) three days after five times consecutive i.p. injection of tamoxifen (10 mg/kg). Ten weeks later, Acvr1^(R206H) and optACVR1 mRNA levels in the liver were assessed by RT-PCR. MicroCT analysis of whole body (FIG. 21B), torso (FIG. 21C), and lower body (FIG. 21D) demonstrates that AAV-mediated expression of amiR-RH6.optACVR1 prevents chronic HO in Acvr1R^(206H);PDGFRa-Cre mice. Arrows indicate HO areas. Total HO volume (FIG. 21E) and number of HO areas (FIG. 21F) in whole body were quantitated. Percentage of clinical HO incidence was assessed (FIG. 21G). MicroCT and histology of knee joints were performed to assess heterotopic bone (FIG. 21H, left and middle), degeneration of articular cartilage (FIG. 21H, middle), and growth plate (FIG. 21H, right). Boxes indicate HO areas and articular cartilage and growth plate. Frequency of immune cells within the population of total splenocytes indicate little to no effects of AAV vectors on systemic immune responses (n=6-8, FIG. 21I). Heterotopic bone bridging the femur to the fibular head (FIG. 21H) and severe osteoarthritis in the knee joints (FIG. 21J, left) are likely to cause immobility of hindlimbs in these mice, which was also substantially ameliorated by amiR-RH6.ACVR1^(opt) treatment. Notably, unlike palovarotene treated mice, the chondrocytes residing in the growth plate were normal in amiR-RH6.ACVR1^(opt)-treated mice (FIG. 21J, right). Histopathology evaluation of the lung, liver, kidney, heart, and skeletal muscle was performed in these mice (FIG. 23 ), demonstrating little to no adverse effects of amiR-RH6.ACVR1^(opt) treatment. These results demonstrate that systemic delivery of amiR-RH6.ACVR1^(opt) by rAAV9 capsid can prevent spontaneous HO in adult FOP mice. Taken together, systemic delivery of AAV gene therapeutics that execute ACVR1^(R206H)-specific silencing and gene replacement with ACVR1^(opt) simultaneously is effective in suppressing disabling FOP pathology at juvenile and adult stages, providing the potential for clinical translation to FOP patients.

FIGS. 22A-22F show systemic delivery of AAV-gene therapeutics prevents chronic heterotopic ossification in adult FOP mice. FIG. 22A shows a diagram of a study and treatment design. FIG. 22B shows 5×10¹³ vg/kg of rAAV9 expressing mCherry was i.v. injected into 6 week old Acvr1R206H;Cre-ERT2 mice (n=3) three days after five times consecutive i.p. injection of tamoxifen (10 mg/kg). mCherry expression in individual tissues was monitored by IVIS-100 optical imaging two weeks post-injection. FIGS. 22C-2F show 5×10¹³ vg/kg of rAAV9 carrying ctrl or amiR-RH6.optACVR1 was i.v. injected into 6 week old Acvr1R206H;Cre-ERT2 mice (n=10) three days after five times consecutive i.p. injection of tamoxifen (10 mg/kg). Ten weeks later, the movements of 16 week old AAV-treated mice, including Acvr1R206H (ctrl) mouse with normal locomotion, Acvr1R206H;Cre-ERT2 (ctrl) mouse with slow locomotion, and Acvr1R206H;Cre-ERT2 (amiR-RH6.optACVR1) mouse with normal locomotion. Arrow indicates amiR-RH6.optACVR1-treated mouse (FIG. 22C). FIG. 22D shows the heterotopic bone near knee joints. FIG. 22E shows H&E staining of the longitudinal sections of the AAV-treated spleens. FIG. 22F shows frequency of monocytes, macrophages, and neutrophils within the population of total splenocytes (n=6-8).

FIG. 23 shows effects of AAV-gene therapeutics on tissue histopathology in adult FOP mice. 5×10¹³ vg/kg of rAAV9 carrying ctrl or amiR-RH6.optACVR1 was i.v. injected into 6 week old Acvr1R206H;Cre-ERT2 mice (n=3) three days after five times consecutive i.p. injection of tamoxifen (10 mg/kg). Ten weeks later, H&E staining in lung, liver, kidney, heart, and skeletal muscle was performed to assess tissue histopathology (n=3).

FIGS. 24A-24H show systemic delivery of AAV-gene therapeutics prevents chronic heterotopic ossification in juvenile FOP mice. FIG. 24A shows 5×10¹³ vg/kg of rAAV9 expressing LacZ was i.v. injected into 3 week old Acvr1R^(206H);PDGFRa-Cre mice (n=3) and two weeks later, X-radiography of whole body was performed to locate HO sites (top). Frozen-sections of HO tissues were stained for X-galactosidase (bottom). Boxes indicate HO tissues. FIGS. 24B-24H show P1 Acvr1R^(206H);PDGFRa-Cre neonates (n=12) were treated with 10¹¹ GC of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 via facial vein injection. Survival (FIG. 24B) and body weight (FIG. 24C) of AAV-treated mice were weekly analyzed from the age of three weeks old to eight weeks old. MicroCT analysis of 5 week old AAV-treated skulls shows the ability of AAV vectors to reverse jaw ankylosis of Acvr1^(R206H);PDGFRa-Cre mice (FIGS. 24D-24E). Images of 3D reconstruction (FIG. 24D, top) and 2D transverse section (FIG. 24D, bottom) and distance of open mouth (FIG. 24E) are displayed. Arrows indicate the areas of temporomandibular joint ankylosis. It was likely that reduced survival and substantial weight loss of control-treated Acvr1^(R206H) mice were primarily associated with jaw ankylosis, which was observed in all mice that failed to open mouth and died early due to starvation (FIG. 24D). While these mice developed HO at both sides of temporomandibular joints (TMJ), most of HO developed at only one side of TMJs by treatment with amiR-RH6 or ACVR1^(opt). amiR-RH6.ACVR1^(opt) treatment almost completely suppressed HO at both sides of TMJs, resulting in a significant increase in survival rate and body weight. These results suggest that compared to Acvr1^(R206H)-specific silencing and gene replacement with ACVR1^(opt), the combinatory approach using amiR-RH6.ACVR1^(opt) is most effective in preventing early-onset HO at TMJs in juvenile FOP mice.

Since osteoporosis has been considered as a major clinical feature of advanced FOP patients, vertebral bone mass and architecture of 5-week-old Acvr1^(R206H) mice were assessed by microCT (FIG. 24D), demonstrating ˜70% decrease of trabecular bone mass compared to littermate controls. This phenotype was substantially ameliorated by treatment with amiR-RH6.ACVR1^(opt), not amiR-RH6 and ACVR1^(opt). Additionally, as previously reported, Acvr1^(R206H) mice developed spontaneous HO at multiple anatomical locations, including cervical spine and joints in the hip, forelimb, hindlimb, and ankle, which was substantially ameliorated by treatment with amiR-RH6, ACVR1^(opt), or amiR-RH6.ACVR1^(opt) (FIG. 24D).

As shown in the present disclosure, since PDGFRα is highly expressed in dental mesenchymal stem cells and odontoblasts (FIG. 27C), targeting Acvr1^(R206H) using PDGFRα driver also resulted in low alveolar bone mass in both maxillary and mandibular bones, which was markedly improved by treatment with amiR-RH6.ACVR1^(opt) (FIG. 24G and FIG. 27D). Notably, tooth morphology and dentin mass were both normal in Acvr1^(R206H) mice, suggesting that ACVR1^(R206H) mutation is dispensable of dental development and homeostasis. (FIG. 24D). MicroCT analysis of maxillary and mandibular bones demonstrates that AAV-mediated expression of amiR-RH6.optACVR1 reverses low bone mass of Acvr1R^(206H);PDGFRa-Cre mice (FIGS. 24F-24G). 2D cross (FIG. 24F) and transverse (FIG. 24G) section images are displayed. Arrows indicate dental root bones. MicroCT analysis of whole body shows the ability of AAV vectors to prevent chronic HO in Acvr1R^(206H);PDGFRa-Cre mice (FIG. 24H). Images of 3D reconstruction (FIG. 24H, left) and 2D transverse section (FIG. 24H, right) are displayed. While multiple residual HO lesions were detected in Acvr1^(R206H) mice treated with amiR-RH6 or ACVR1^(opt), amiR-RH6.ACVR1^(opt) treatment almost completely prevented spontaneous HO throughout the body. Thus, accompanied with a low incidence of jaw ankylosis, a single treatment of amiR-RH6.ACVR1^(opt) at infant stages can prevent early-onset osteoporosis and progressive HO in FOP mice during skeletal development.

FIGS. 25A-25B show systemic delivery of AAV9 is effective for the transduction of HO tissues in juvenile FOP mice. Since PDGFRα⁺ progenitors in the skeletal muscle interstitium have been known as major cell populations of origin responsible for HO, mice harboring a conditional knock-in allele of Acvr1^((R206H)Fl) were crossed with PDGFRα-cre mice (Acvr1^((R206H)Fl);PDGFRα), resulting in early-onset and widely distributed HO phenotypes of the musculature, tendons, and ligaments at multiple anatomical locations (FIG. 25A). Specifically, FIG. 25A shows Alcian blue staining of HO tissues in 5 week old Acvr1R206H;PDGFRα-Cre mice (n=3). FIG. 25B shows 5×10¹³ vg/kg of rAAV9 expressing LacZ was i.v. injected into 3 week old Acvr1R206H;PDGFRα-Cre mice (n=3) and two weeks later, X-radiography of whole body was performed to locate HO sites. Frozen-sections of HO tissues were stained for X-galactosidase.

FIGS. 26A-26B show systemic delivery of AAV-gene therapeutics prevents chronic heterotopic ossification in juvenile FOP mice. FIG. 26A shows P1 Acvr1R^(206H);PDGFRa-Cre neonates (n=12) were treated with 10¹¹ GC of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 via facial vein injection. Movements of 5 week old AAV-treated mice, including normal sized Acvr1R^(206H) mouse (ctrl), small sized Acvr1R^(206H);PDGFRa-Cre mouse (ctrl), and normal sized Acvr1R^(206H);PDGFRa-Cre mouse (amiR-RH6.optACVR1), are shown. FIG. 26B shows X-radiography showing whole body of 5 week old AAV-treated mice.

FIGS. 27A-27D show systemic delivery of AAV-gene therapeutics prevents jaw ankylosis in juvenile FOP mice. P1 Acvr1R^(206H);PDGFRa-Cre neonates (n=12) were treated with 10¹¹ GC of rAAV9 carrying ctrl, amiR-RH6, optACVR1, or amiR-RH6.optACVR1 via facial vein injection. FIG. 27A shows photography demonstrating the ability of 5 week old AAV-treated mice to open mouth. FIG. 27B shows photography showing individual tissues of 5 week old AAV-treated mice demonstrates that AAV-mediated expression of optACVR1 or amiR-RH6.optACVR1 prevents a decay of Acvr1R^(206H);PDGFRa-Cre intestines by starvation.

FIGS. 28A-28C show modification of the AAV vector genome to control the expression of therapeutic genes. FIG. 28A shows a schematic diagram of plasmid construction. CMV enhancer/chicken β-actin promoter (CBA), MBL intron (MBLi), β-globin polyA sequence (PA), and inverted terminal repeat (TR). miR-122: liver-specific miRNA, miR-208a: cardiac muscle-specific miRNA, TS: target sequence. miR-122/miR208a-TS is used to repress AAV's expression in the liver and heart. EndoID1-BRE: BMP-responsive elements. pNF-kB: inflammation-responsive elements. The promoter containing EndoID1-BRE/pNF-kB is used to induce AAV's expression in response to BMPs, activin A, and/or pro-inflammatory cytokines. FIG. 28B shows a schematic diagram of plasmid construction. FIG. 28C shows 6 week old wildtype mice were treated with i.v. injection of PBS or 5×10¹³ vg/kg of rAAV9.egfp or rAAV9.egfp.MIR-TS and two weeks later, tissue distribution of AAV vectors were monitored by IVIS-100 optical imaging system using EGFP expression.

Example 8: In Vivo Therapeutic Effects of AAV Gene Therapeutics on Traumatic HO in FOP Mice

The transduction efficiencies of rAAVs in vitro have been known to be challenging to predict the in vivo performance due to the presence of multiple physiological barriers, including the route of administration, serum factors, circulating neutralizing antibodies, and extracellular barriers. Therefore, to examine the ability of rAAV6.2 to transduce the skeletal muscle where HO primarily develops in FOP mice, rAAV6.2-egfp vector was intravenously (i.v.) injected into mice and EGFP expression in individual tissues was monitored by IVIS-100 optical imaging (FIG. 32A). It was observed that EGFP expression was only detected in the liver while the expression in the skeletal muscle was slightly increased when supplemented with vascular agents, including recombinant vascular endothelial growth factor (VEGF)-166, sodium heparin, and serum albumin (FIG. 32B). It has been previously shown that i.v. injection of rAAV9 vector transduces the skeletal muscle and intramuscular (i.m.) injection of rAAV9 is effective in transducing muscle-resident mesenchymal stem cells (MSCs, FIG. 32C). Since i.m. injection often causes HO lesions in FOP patients, interdermal (i.d.) delivery of rAAV9.mCherry to the tibial muscle using a hollow microneedle was examined, demonstrating the expression of mCherry throughout the muscle fiber (FIGS. 32D and 32E).

To examine the ability of i.d. injected rAAV9 to transduce HO-forming FAPs, a mouse model representing acquired forms of HO, muscle injury/BMP-induced HO, was employed in Tie2-cre;Rosa26^(mCherry) reporter mice that express mCherry in a subset of FAPs. One week after blunt muscle trauma and administration of recombinant BMP2/7, rAAV9.egfp was i.d. injected into the femoral muscle and three weeks later, HO and EGFP expression were assessed by X-radiography and fluorescence microscopy, respectively (FIG. 18A). EGFP was highly expressed in the femoral muscle as well as in Tie2⁺ FAPs in the heterotopic bone (FIG. 6D), demonstrating that i.d. injected rAAV9 were effective in transducing myocytes and FAPs in the skeletal muscle during HO development. There was little to no EGFP expression in rAAV6.2-treated heterotopic bone (FIGS. 6A and 6B). To directly test whether i.d. delivery of rAAV9 can transduce HO-forming FAPs in FOP mice, a conditional knock-in model of ACVR1^((R206H)Fl) was treated with i.d. injection of rAAC9 expressing the Cre recombinase and trauma-induced HO was assessed by microCT (FIG. 18C). Cre-mediated induction of ACVR1^(R206H) mRNA in the femoral muscle was validated by RT-PCR analysis (FIG. 17F). This corresponds to heterotopic bone formation in the femoral muscle treated with rAAV9.Cre, not rAAV9.Vec (FIG. 17G), demonstrating the effectiveness of i.d. delivery of rAAV9 to HO-forming FAPs in the skeletal muscle. Finally, rAAV9 vectors carrying control vector, amiR-RH6, ACVR1^(opt) or amiR-RH6.ACVR1^(opt) were i.d. injected into the tibial muscle of Acvr1^((R206H)Fl);Cre-ER^(T2) mice expressing a tamoxifen-induced Cre recombinase and knockdown efficiency of ACVR1^(R206H) and ACVR1^(opt) expression in the tibial muscle were validated (FIGS. 18D and 18E). Trauma-induced HO was substantially decreased by the treatment with therapeutic AAV vectors relative to control AAV vector (FIG. 19D), demonstrating that ACVR1^(R206H)-specific silencing, gene replacement, and the combinatory approaches were all effective in suppressing traumatic HO in young adult FOP mice. As BMP4-induced osteogenesis of Acvr1^(R206H) BMSCs was not affected by amiR-RH6.ACVR1^(opt) (FIG. 19D), there were little to no effects on muscle injury/BMP-induced HO (FIG. 17I), suggesting that therapeutic effects of the AAV vectors on traumatic HO are specific to ACVR1^(R206H) receptor without affecting acquired forms of HO.

>Opt ACVR1 nucleic acid sequence SEQ ID NO: 1 atggtcgatggagtgatgatcctgcctgtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaa gctgtatatgtgcgtgtgcgagggcctgagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgac ggcttccacgtgtaccagaagggctgctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtg gagtgctgtcagggcgattggtgtaaccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcac ctggaagtgggcctgatcatcctgagcgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcgga gaaaccaggagcggctgaatccaagagatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggc cgacctgctggatcacagctgcaccagcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgct ggagtgcgtgggcaagggccggtacggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccg ggatgagaagtcttggtttagagagacagagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatg acctctcgccactcctctacacagctgtggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactgga cacagtgtcttgcctgcggatcgtgctgtctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagca atcgcacacagagatctgaagtctaagaacatcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcac agccagtccaccaaccagctggacgtgggcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaa tccaggtggactgcttcgatagctataagagggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagca acggcatcgtggaggactacaagccacccttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggat cagcagaggcccaacatccctaatcgctggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgttggtatcagaatc ctagcgccaggctgaccgccctgcgcatcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctga; >AAV-CBA-opt-ACVR1 nucleic acid sequence SEQ ID NO: 2 gctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcg agcgcgcagagagggagtggccaactccatcactaggggttccttgtagttaatgattaacccgccatgctacttatctaccagggtaatgg ggatcctctagaactatagctagtcgacattgattattgactagttattaatagtaatcaattacggggtcattagttcatagcccatatatggagt tccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccata gtaacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaa gtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacat ctacgtattagtcatcgctattaccatggtcgaggtgagccccacgttctgcttcactctccccatctcccccccctccccacccccaattttgt atttatttattttttaattattttgtgcagcgatgggggcggggggggggggggggcgcgcgccaggcggggcggggcggggcgaggg gcggggcggggcgaggcggagaggtgcggcggcagccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggc ggcggcggccctataaaaagcgaagcgcgcggcgggcggggagtcgctgcgacgctgccttcgccccgtgccccgctccgccgccg cctcgcgccgcccgccccggctctgactgaccgcgttactcccacaggtgagcgggcgggacggcccttctcctccgggctgtaattagc gcttggtttaatgacggcttgtttcttttctgtggctgcgtgaaagccttgaggggctccgggagggccctttgtgcggggggagcggctcg gggggtgcgtgcgtgtgtgtgtgcgtggggagcgccgcgtgcggctccgcgctgcccggcggctgtgagcgctgcgggcgcggcgc ggggctttgtgcgctccgcagtgtgcgcgaggggagcgcggccgggggcggtgccccgcggtgcggggggggctgcgaggggaac aaaggctgcgtgcggggtgtgtgcgtgggggggtgagcagggggtgtgggcgcgtcggtcgggctgcaaccccccctgcacccccct ccccgagttgctgagcacggcccggcttcgggtgcggggctccgtacggggcgtggcgcggggctcgccgtgccgggcggggggtg gcggcaggtgggggtgccgggcggggcggggccgcctcgggccggggagggctcgggggaggggcgcggcggcccccggagc gccggcggctgtcgaggcgcggcgagccgcagccattgccttttatggtaatcgtgcgagagggcgcagggacttcctttgtcccaaatct gtgcggagccgaaatctgggaggcgccgccgcaccccctctagcgggcgcggggcgaagcggtgcggcgccggcaggaaggaaat gggcggggagggccttcgtgcgtcgccgcgccgccgtccccttctccctctccagcctcggggctgtccgcggggggacggctgccttc gggggggacggggcagggcggggttcggcttctggcgtgtgaccggcggctctagagcctctgctaaccatgttcatgccttcttctttttc ctacagctcctgggcaacgtgctggttattgtgctgtctcatcattttggcaaagaattccgccaccatggtcgatggagtgatgatcctgcct gtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaagctgtatatgtgcgtgtgcgagggcct gagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgacggcttccacgtgtaccagaagggctg ctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtggagtgctgtcagggcgattggtgtaa ccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcacctggaagtgggcctgatcatcctgag cgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcggagaaaccaggagcggctgaatccaag agatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggccgacctgctggatcacagctgcacca gcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgctggagtgcgtgggcaagggccggtac ggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccgggatgagaagtcttggtttagagagac agagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatgacctctcgccactcctctacacagctgt ggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactggacacagtgtcttgcctgcggatcgtgctg tctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagcaatcgcacacagagatctgaagtctaag aacatcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcacagccagtccaccaaccagctggacgtg ggcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaatccaggtggactgcttcgatagctataa gagggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagcaacggcatcgtggaggactacaagcca cccttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggatcagcagaggcccaacatccctaatcg ctggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgttggtatcagaatcctagcgccaggctgaccgccctgcg catcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctgacctgaggatccgatctattccctctgccaaa aattatggggacatcatgaagccccttgagcatctgacttctggctaataaaggaaatttattttcattgcaatagtgtgttggaattattgtgtct ctcactcggaagcaattcgttgatctgaatttcgaccacccataatacccattaccctggtagataagtagcatggcgggttaatcattaactac aaggaacccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgccc gggctttgcccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgg gaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgc ccttcccaacagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcag cgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctc taaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggc catcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaacccta tctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaaca aaatattaacgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgc tcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgattgaacaagatggattgcacgcaggttctccggccg cttgggtggagaggctattcggctatgactgggcacaacagacaatcggctgctctgatgccgccgtgttccggctgtcagcgcaggggc gcccggttctttttgtcaagaccgacctgtccggtgccctgaatgaactgcaagacgaggcagcgcggctatcgtggctggccacgacgg gcgttccttgcgcagctgtgctcgacgttgtcactgaagcgggaagggactggctgctattgggcgaagtgccggggcaggatctcctgtc atctcaccttgctcctgccgagaaagtatccatcatggctgatgcaatgcggcggctgcatacgcttgatccggctacctgcccattcgacca ccaagcgaaacatcgcatcgagcgagcacgtactcggatggaagccggtcttgtcgatcaggatgatctggacgaagagcatcaggggc tcgcgccagccgaactgttcgccaggctcaaggcgagcatgcccgacggcgaggatctcgtcgtgacccatggcgatgcctgcttgccg aatatcatggtggaaaatggccgcttttctggattcatcgactgtggccggctgggtgtggcggaccgctatcaggacatagcgttggctac ccgtgatattgctgaagagcttggcggcgaatgggctgaccgcttcctcgtgctttacggtatcgccgctcccgattcgcagcgcatcgcctt ctatcgccttcttgacgagttcttctgataactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatct aggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaagg atcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagct accaactctttttccgaaggtaactggcttcagcagagcgcagataccaaatactgttcttctagtgtagccgtagttaggccaccacttcaag aactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggact caagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacac cgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcag ggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgag cgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggcct tttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacg accgagcgcagcgagtcagtgagcgaggaagcggaagagcgcccaatacgcaaaccgcctctccccgcgcgttggccgattcattaat gcagctggcacgacaggtttcccgactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccagg ctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcggataacaatttcacacaggaaacagctatgaccatgattacgccaga tttaattaaggccttaattag >AAV-CBA-MBL-opt-ACVR1 nucleic acid sequence SEQ ID NO: 3 cttaattaggctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctaggtcgcccggcctcagtga gcgagcgagcgcgcagagagggagtggccaactccatcactaggggaccagtagttaatgattaacccgccatgctacttatctaccag ggtaatggggatcctctagaactatagctagtcgacattgattattgactagttattaatagtaatcaattacggggtcattagttcatagcccat atatggagaccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtat gttcccatagtaacgccaatagggactaccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatc atatgccaagtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactacctacttg gcagtacatctacgtattagtcatcgctattaccatgtcgaggccacgttctgcttcactctccccatctcccccccctccccacccccaattttg tatttatttattttttaattattttgtgcagcgatgggggcggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcgg ggcggggcgaggcggagaggtgcggcggcagccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcg gcggccctataaaaagcgaagcgcgcggcgggcgggagcaagctttcagatcgcctggagacgccatccacgctgttttgacctccata gaagacaccgggaccgatccagcctccgcggccgggaacggtgcattggaacgcggattccccgtgccaagagtgacgtaagtaccg cctatagagtctataggcccacccccttggcttcttatgcatgctatactgtttttggcttggggtctatacacccccgcttcctcatgtttgctgc ccgtgaccagcacgtcaacgattttgtgggcacgggcgacaccgcagtgtagtctgagcagtactcgttgctgccgcgcgcgccaccag acataatagctgacagactaacagactgttcctttccatgggtcttttctgcagtcaccgtcgccgccaccggtgaattccgccaccatggtc gatggagtgatgatcctgcctgtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaagctgtat atgtgcgtgtgcgagggcctgagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgacggcttc cacgtgtaccagaagggctgctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtggagtg ctgtcagggcgattggtgtaaccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcacctggaa gtgggcctgatcatcctgagcgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcggagaaacc aggagcggctgaatccaagagatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggccgacctg ctggatcacagctgcaccagcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgctggagtgc gtgggcaagggccggtacggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccgggatgag aagtcttggtttagagagacagagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatgacctctcg ccactcctctacacagctgtggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactggacacagtgt cttgcctgcggatcgtgctgtctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagcaatcgcac acagagatctgaagtctaagaacatcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcacagccagt ccaccaaccagctggacgtgggcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaatccaggt ggactgcttcgatagctataagagggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagcaacggcat cgtggaggactacaagccacccttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggatcagcag aggcccaacatccctaatcgctggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgttggtatcagaatcctagcg ccaggctgaccgccctgcgcatcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctgacctgaggatc cgatctttttccctctgccaaaaattatggggacatcatgaagccccttgagcatctgacttctggctaataaaggaaatttattttcattgcaata gtgtgttggaattttttgtgtctctcactcggaagcaattcgttgatctgaatttcgaccacccataatacccattaccctggtagataagtagcat ggcgggttaatcattaactacaaggaacccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgac caaaggtcgcccgacgcccgggctttgcccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtc gttttacaacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaa gaggcccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgg gtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgc cggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggt gatggttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaact ggaacaacactcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaa aatttaacgcgaattttaacaaaatattaacgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaa tacattcaaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtg tcgcccttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgc acgagtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaa gttctgctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgag tactcaccagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcgg ccaacttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttggg aaccggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactg gcgaactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccg gctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccg tatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcatt ggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatct catgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcg cgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaact ggcttcagcagagcgcagataccaaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatac ctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataag gcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtg agctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacg agggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcag gggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgtta tcccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtga gcgaggaagcggaagagcgcccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttccc gactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgt atgttgtgtggaattgtgagcggataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggc; >AAV-PBP (synthetic intron)-opt-ACVR1 nucleic acid sequence SEQ ID NO: 4 cttaattaggctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtga gcgagcgagcgcgcagagagggagtggccaactccatcactaggggttccttgtagttaatgattaacccgccatgctacttatctaccag ggtaatggggatcctctagaactatagctagtcgacattgattattgactagttattaatagtaatcaattacggggtcattagttcatagcccat atatggagttccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtat gttcccatagtaacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatc atatgccaagtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttg gcagtacatctacgtattagtcatcgctattaccatgtcgaggccacgttctgcttcactctccccatctcccccccctccccacccccaattttg tatttatttattttttaattattttgtgcagcgatgggggcggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcgg ggcggggcgaggcggagaggtgcggcggcagccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcg gcggccctataaaaagcgaagcgcgcggcgggcgggagcaccaccgcggtggcggccctagagtcgatcgaggaactgaaaaacca gaaagttaactggtaagtttagtctttttgtcttttatttcaggtcccggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgc ctttacttctaggcctgtacggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtgaattccgccaccatg gtcgatggagtgatgatcctgcctgtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaagct gtatatgtgcgtgtgcgagggcctgagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgacgg cttccacgtgtaccagaagggctgctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtgga gtgctgtcagggcgattggtgtaaccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcacctg gaagtgggcctgatcatcctgagcgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcggagaa accaggagcggctgaatccaagagatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggccga cctgctggatcacagctgcaccagcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgctgga gtgcgtgggcaagggccggtacggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccgggat gagaagtcttggtttagagagacagagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatgacctc tcgccactcctctacacagctgtggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactggacaca gtgtcttgcctgcggatcgtgctgtctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagcaatcg cacacagagatctgaagtctaagaacatcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcacagcc agtccaccaaccagctggacgtgggcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaatcca ggtggactgcttcgatagctataagagggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagcaacgg catcgtggaggactacaagccacccttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggatcagc agaggcccaacatccctaatcgctggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgttggtatcagaatcctag cgccaggctgaccgccctgcgcatcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctgacctgaggg cggccgcgtcgacggatccgatctttttccctctgccaaaaattatggggacatcatgaagccccttgagcatctgacttctggctaataaag gaaatttattttcattgcaatagtgtgttggaattttttgtgtctctcactcggaagcaattcgttgatctgaatttcgaccacccataatacccatta ccctggtagataagtagcatggcgggttaatcattaactacaaggaacccctagtgatggagttggccactccctctctgcgcgctcgctcg ctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttgcccgggcggcctcagtgagcgagcgagcgcgcagccttaatt aacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgc cagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatgggacgcgccctgtagc ggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcc cttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgac cccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaa tagtggactcttgttccaaactggaacaacactcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaa aaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgcttacaatttaggtggcacttttcggggaaatgtgcgcggaa cccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagt atgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaaga tgctgaagatcagttgggtgcacgagtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttt tccaatgatgagcacttttaaagttctgctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacacta ttctcagaatgacttggttgagtactcaccagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataac catgagtgataacactgcggccaacttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcat gtaactcgccttgatcgttgggaaccggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaaca acgttgcgcaaactattaactggcgaactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggacc acttctgcgctcggcccttccggctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggg gccagatggtaagccctcccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagata ggtgcctcactgattaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctag gtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggat cttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagcta ccaactctttttccgaaggtaactggcttcagcagagcgcagataccaaatactgttcttctagtgtagccgtagttaggccaccacttcaaga actctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactc aagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacacc gaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagg gtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagc gtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttt tgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacga ccgagcgcagcgagtcagtgagcgaggaagcggaagagcgcccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatg cagctggcacgacaggtttcccgactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccaggc tttacactttatgcttccggctcgtatgttgtgtggaattgtgagcggataacaatttcacacaggaaacagctatgaccatgattacgccagatt taattaaggc; >Nucleic acid sequence encoding RH1 ami-RNA SEQ ID NO: 5 gtcttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcc tctggccggctgcacacctcctggcgggcagctgtgagtgtaatctggtgagccacttgttctggcaatacctgagtggctctgcggattac actcacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggg gaataaggacagtgtcacccctgcaggggatccggtggtggtgc; >Nucleic acid sequence encoding RH2 ami-RNA SEQ ID NO: 6 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtgagtgtaagctggtgagccacttgttctggcaatacctgagtggctctgcggcttacactcacggaggcctgccctga ctgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; >wtACVR1 nucleic acid sequence SEQ ID NO: 7 tcgagggtacaaagaacagtggctcgccagattacactgttggagtgc; >ACVR1-R206H nucleic acid sequence SEQ ID NO: 8 tcgagggtacaaagaacagtggctcaccagattacactgttggagtgc; >ACVR1-optAVCR1 nucleic acid sequence SEQ ID NO: 9 tcgagggtgcagaggaccgtggcccggcagatcaccctgctggagtgc; >AAVscCB6 (amiR33-ACVR1-A7) EGFP nucleic acid sequence SEQ ID NO: 10 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtgagtgtaatctggtgagccacttgttctggcaatacctgagtggctctgcggattacac tcacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcttttttacggttcctggctttttgctggctttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A7-14) EGFP nucleic acid sequence SEQ ID NO: 11 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctattgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtgagtgtaagctggtgagccacttgttctggcaatacctgagtggctctgcggcttaca ctcacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggg aataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgt acggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagct gttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgat gccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctac ggcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcg caccatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctga agggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgac aagcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcag aacacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgaga agcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaa gcttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcc ttgaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctgggggg tggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcattttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A8) EGFP nucleic acid sequence SEQ ID NO: 12 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctattgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtggtgtaatctggtgagccactgtgttctggcaatacctgcagtggctgtctagattaca ccacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttattgcggcattttg ccttcctgatttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A8-14) EGFP nucleic acid sequence SEQ ID NO: 13 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtggtgtaagctggtgagccactgtgttctggcaatacctgcagtggctgtctagcttaca ccacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A9) EGFP nucleic acid sequence SEQ ID NO: 14 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtgtgtaatctggtgagccactgttgttctggcaatacctgacagtggcagatcagattac acacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcattttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A9-14) EGFP nucleic acid sequence SEQ ID NO: 15 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtgtgtaagctggtgagccactgttgttctggcaatacctgacagtggcagatcagcttac acacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A10) EGFP nucleic acid sequence SEQ ID NO: 16 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtggtaatctggtgagccactgtttgttctggcaatacctgaacagtgggacgccagatta ccacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A10-14) EGFP nucleic acid sequence SEQ ID NO: 17 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtggtaagctggtgagccactgtttgttctggcaatacctgaacagtgggacgccagctt accacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggg aataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgt acggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagct gttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgat gccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctac ggcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcg caccatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctga agggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgac aagcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcag aacacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgaga agcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaa gcttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcc ttgaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctgggggg tggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A11) EGFP nucleic acid sequence SEQ ID NO: 18 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtgtaatctggtgagccactgttctgttctggcaatacctggaacagtgcgttaccagatta cacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaa taaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgtac ggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctgt tcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A11-14) EGFP nucleic acid sequence SEQ ID NO: 19 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtgtaagctggtgagccactgttctgttctggcaatacctggaacagtgcgttaccagctt acacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A12) EGFP nucleic acid sequence SEQ ID NO: 20 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtgaatctggtgagccactgttcttgttctggcaatacctgagaacagtcccccaccagat tcacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >AAVscCB6 (amiR33-ACVR1-A12-14) EGFP nucleic acid sequence SEQ ID NO: 21 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtgtagccatgctctaggaagatcaattcggtacaattcacgcgtcgacattgattattgactagctctggtcgttac ataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgcca atagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccc ctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgag gccacgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcggg gggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggcag ccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcggg cgggagcgggatcagccaccgcggtggcggcctagagtcgacgaggaactgaaaaaccagaaagttaactggtaagtttagtctttttgt cttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctc tggccggctgcacacctcctggcgggcagctgtgaagctggtgagccactgttcttgttctggcaatacctgagaacagtcccccaccagc ttcacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtgggga ataaggacagtgtcacccctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgta cggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatggtgagcaagggcgaggagctg ttcaccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcgatg ccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctacg gcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgc accatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaa gggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagccacaacgtctatatcatggccgaca agcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcgtgcagctcgccgaccactaccagcaga acacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgccctgagcaaagaccccaacgagaa gcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaaagcggccatcaag cttatcgataccgtcgactagagctcgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttcctt gaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggt ggggtggggcaggacagcaagggggaggattgggaagacaattaggtagataagtagcatggcgggttaatcattaactacaaggaac ccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttg cccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgttttacaacgtcgtgactgggaaaaccc tggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaa cagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccg ctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgg gggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccct gatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtct attcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaa cgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgaga caataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttg ccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatct caacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatccc gtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatctt acggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggag gaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccatacc aaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccgg caacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatct ggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacgggg agtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactc atatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgag ttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaa aaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagatacc aaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccag tggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacgg ggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgctt cccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacg cctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaa cgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgt attaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgc ccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgag cgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcgg ataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggccttaattagg; >wtACVR1 amiR-sensor plasmids nucleic acid sequence SEQ ID NO: 22 agatctgcgcagcaccatggcctgaaataacctctgaaagaggaacttggttaggtaccttctgaggcggaaagaaccagctgtggaatgt gtgtcagttagggtgtggaaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccaggtgtgg aaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccatagtcccgcccctaactccgcccatc ccgcccctaactccgcccagttccgcccattctccgccccatggctgactaattttttttatttatgcagaggccgaggccgcctcggcctctg agctattccagaagtagtgaggaggcttttttggaggcctaggcttttgcaaaaagcttgattcttctgacacaacagtctcgaacttaagctgc agaagttggtcgtgaggcactgggcaggtaagtatcaaggttacaagacaggtttaaggagaccaatagaaactgggcttgtcgagacag agaagactatgcgtttctgataggcacctattggtatactgacatccactttgcctttctctccacaggtgtccactcccagttcaattacagct cttaaggctagagtacttaatacgactcactataggctagccaccatggcttccaaggtgtacgaccccgagcaacgcaaacgcatgatca ctgggcctcagtggtgggctcgctgcaagcaaatgaacgtgctggactccttcatcaactactatgattccgagaagcacgccgagaacgc cgtgatttttctgcatggtaacgctgcctccagctacctgtggaggcacgtcgtgcctcacatcgagcccgtggctagatgcatcatccctga tctgatcggaatgggtaagtccggcaagagcgggaatggctcatatcgcctcctggatcactacaagtacctcaccgcttggttcgagctgc tgaaccttccaaagaaaatcatctttgtgggccacgactggggggcttgtctggcctttcactactcctacgagcaccaagacaagatcaag gccatcgtccatgctgagagtgtcgtggacgtgatcgagtcctgggacgagtggcctgacatcgaggaggatatcgccctgatcaagagc gaagagggcgagaaaatggtgcttgagaataacttcttcgtcgagaccatgctcccaagcaagatcatgcggaaactggagcctgagga gttcgctgcctacctggagccattcaaggagaagggcgaggttagacggcctaccctctcctggcctcgcgagatccctctcgttaaggga ggcaagcccgacgtcgtccagattgtccgcaactacaacgcctaccttcgggccagcgacgatctgcctaagatgttcatcgagtccgacc ctgggttcttttccaacgctattgtcgagggagctaagaagttccctaacaccgagttcgtgaaggtgaagggcctccacttcagccaggag gacgctccagatgaaatgggtaagtacatcaagagcttcgtggagcgcgtgctgaagaacgagcagtaattctaggcgatcgctcgaggg tacaaagaacagtggctcgccagattacactgttggagtgcggccgctggccgcaataaaatatctttattttcattacatctgtgtgttggttttt tgtgtgaggatctaaatgagtcttcggacctcgcgggggccgcttaagcggtggttagggtttgtctgacgcggggggagggggaagga acgaaacactctcattcggaggcggctcggggtttggtcttggtggccacgggcacgcagaagagcgccgcgatcctcttaagcacccc cccgccctccgtggaggcgggggtttggtcggcgggtggtaactggcgggccgctgactcgggcgggtcgcgcgccccagagtgtga ccttttcggtctgctcgcagacccccgggcggcgccgccgcggcggcgacgggctcgctgggtcctaggctccatggggaccgtatac gtggacaggctctggagcatccgcacgactgcggtgatattaccggagaccttctgcgggacgagccgggtcacgcggctgacgcgga gcgtccgttgggcgacaaacaccaggacggggcacaggtacactatcttgtcacccggaggcgcgagggactgcaggagcttcaggg agtggcgcagctgcttcatccccgtggcccgttgctcgcgtttgctggcggtgtccccggaagaaatatatttgcatgtctttagttctatgatg acacaaaccccgcccagcgtcttgtcattggcgaattcgaacacgcagatgcagtcggggcggcgcggtcccaggtccacttcgcatatt aaggtgacgcgtgtggcctcgaacaccgagcgaccctgcagcgacccgcttaaaagcttggcattccggtactgttggtaaagccaccat ggccgatgctaagaacattaagaagggccctgctcccttctaccctctggaggatggcaccgctggcgagcagctgcacaaggccatga agaggtatgccctggtgcctggcaccattgccttcaccgatgcccacattgaggtggacatcacctatgccgagtacttcgagatgtctgtg cgcctggccgaggccatgaagaggtacggcctgaacaccaaccaccgcatcgtggtgtgctctgagaactctctgcagttcttcatgccag tgctgggcgccctgttcatcggagtggccgtggcccctgctaacgacatttacaacgagcgcgagctgctgaacagcatgggcatttctca gcctaccgtggtgttcgtgtctaagaagggcctgcagaagatcctgaacgtgcagaagaagctgcctatcatccagaagatcatcatcatg gactctaagaccgactaccagggcttccagagcatgtacacattcgtgacatctcatctgcctcctggcttcaacgagtacgacttcgtgcca gagtctttcgacagggacaaaaccattgccctgatcatgaacagctctgggtctaccggcctgcctaagggcgtggccctgcctcatcgca ccgcctgtgtgcgcttctctcacgcccgcgaccctattttcggcaaccagatcatccccgacaccgctattctgagcgtggtgccattccacc acggcttcggcatgttcaccaccctgggctacctgatttgcggctttcgggtggtgctgatgtaccgcttcgaggaggagctgttcctgcgca gcctgcaagactacaaaattcagtctgccctgctggtgccaaccctgttcagcttcttcgctaagagcaccctgatcgacaagtacgacctgt ctaacctgcacgagattgcctctggcggcgccccactgtctaaggaggtgggcgaagccgtggccaagcgctttcatctgccaggcatcc gccagggctacggcctgaccgagacaaccagcgccattctgattaccccagagggcgacgacaagcctggcgccgtgggcaaggtgg tgccattcttcgaggccaaggtggtggacctggacaccggcaagaccctgggagtgaaccagcgcggcgagctgtgtgtgcgcggccc tatgattatgtccggctacgtgaataaccctgaggccacaaacgccctgatcgacaaggacggctggctgcactctggcgacattgcctact gggacgaggacgagcacttcttcatcgtggaccgcctgaagtctctgatcaagtacaagggctaccaggtggccccagccgagctggag tctatcctgctgcagcaccctaacattttcgacgccggagtggccggcctgcccgacgacgatgccggcgagctgcctgccgccgtcgtc gtgctggaacacggcaagaccatgaccgagaaggagatcgtggactatgtggccagccaggtgacaaccgccaagaagctgcgcggc ggagtggtgttcgtggacgaggtgcccaagggcctgaccggcaagctggacgcccgcaagatccgcgagatcctgatcaaggctaaga aaggcggcaagatcgccgtgtaataattctagagtcggggcggccggccgcttcgagcagacatgataagatacattgatgagtttggac aaaccacaactagaatgcagtgaaaaaaatgctttatttgtgaaatttgtgatgctattgctttatttgtaaccattataagctgcaataaacaagt taacaacaacaattgcattcattttatgtttcaggttcagggggaggtgtgggaggttttttaaagcaagtaaaacctctacaaatgtggtaaaa tcgataaggatccaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatga gacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcatt ttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactgga tctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattat cccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagca tcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcg gaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccat accaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcc cggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataa atctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacg gggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagttta ctcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgt gagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaaca aaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagat accaaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttac cagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaa cggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccac gcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccaggggga aacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatgga aaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatggctcgac; >ACVR1-R206H amiR-sensor plasmids nucleic acid sequence SEQ ID NO: 23 agatctgcgcagcaccatggcctgaaataacctctgaaagaggaacttggttaggtaccttctgaggcggaaagaaccagctgtggaatgt gtgtcagttagggtgtggaaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccaggtgtgg aaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccatagtcccgcccctaactccgcccatc ccgcccctaactccgcccagttccgcccattctccgccccatggctgactaattttttttatttatgcagaggccgaggccgcctcggcctctg agctattccagaagtagtgaggaggcttttttggaggcctaggcttttgcaaaaagcttgattcttctgacacaacagtctcgaacttaagctgc agaagttggtcgtgaggcactgggcaggtaagtatcaaggttacaagacaggtttaaggagaccaatagaaactgggcttgtcgagacag agaagactcttgcgtttctgataggcacctattggtcttactgacatccactttgcctttctctccacaggtgtccactcccagttcaattacagct cttaaggctagagtacttaatacgactcactataggctagccaccatggcttccaaggtgtacgaccccgagcaacgcaaacgcatgatca ctgggcctcagtggtgggctcgctgcaagcaaatgaacgtgctggactccttcatcaactactatgattccgagaagcacgccgagaacgc cgtgatttttctgcatggtaacgctgcctccagctacctgtggaggcacgtcgtgcctcacatcgagcccgtggctagatgcatcatccctga tctgatcggaatgggtaagtccggcaagagcgggaatggctcatatcgcctcctggatcactacaagtacctcaccgcttggttcgagctgc tgaaccttccaaagaaaatcatctttgtgggccacgactggggggcttgtctggcctttcactactcctacgagcaccaagacaagatcaag gccatcgtccatgctgagagtgtcgtggacgtgatcgagtcctgggacgagtggcctgacatcgaggaggatatcgccctgatcaagagc gaagagggcgagaaaatggtgcttgagaataacttcttcgtcgagaccatgctcccaagcaagatcatgcggaaactggagcctgagga gttcgctgcctacctggagccattcaaggagaagggcgaggttagacggcctaccctctcctggcctcgcgagatccctctcgttaaggga ggcaagcccgacgtcgtccagattgtccgcaactacaacgcctaccttcgggccagcgacgatctgcctaagatgttcatcgagtccgacc ctgggttcttttccaacgctattgtcgagggagctaagaagttccctaacaccgagttcgtgaaggtgaagggcctccacttcagccaggag gacgctccagatgaaatgggtaagtacatcaagagcttcgtggagcgcgtgctgaagaacgagcagtaattctaggcgatcgctcgaggg tacaaagaacagtggctcaccagattacactgaggagtgcggccgctggccgcaataaaatatctttattttcattacatctgtgtgttggttttt tgtgtgaggatctaaatgagtcttcggacctcgcgggggccgcttaagcggtggttagggtttgtctgacgcggggggagggggaagga acgaaacactctcattcggaggcggctcggggtttggtcttggtggccacgggcacgcagaagagcgccgcgatcctcttaagcacccc cccgccctccgtggaggcgggggtttggtcggcgggtggtaactggcgggccgctgactcgggcgggtcgcgcgccccagagtgtga ccttttcggtctgctcgcagacccccgggcggcgccgccgcggcggcgacgggctcgctgggtcctaggctccatggggaccgtatac gtggacaggctctggagcatccgcacgactgcggtgatattaccggagaccttctgcgggacgagccgggtcacgcggctgacgcgga gcgtccgttgggcgacaaacaccaggacggggcacaggtacactatcttgtcacccggaggcgcgagggactgcaggagcttcaggg agtggcgcagctgcttcatccccgtggcccgttgctcgcgtttgctggcggtgtccccggaagaaatatatttgcatgtctttagttctatgatg acacaaaccccgcccagcgtcttgtcattggcgaattcgaacacgcagatgcagtcggggcggcgcggtcccaggtccacttcgcatatt aaggtgacgcgtgtggcctcgaacaccgagcgaccctgcagcgacccgcttaaaagcttggcattccggtactgttggtaaagccaccat ggccgatgctaagaacattaagaagggccctgctcccttctaccctctggaggatggcaccgctggcgagcagctgcacaaggccatga agaggtatgccctggtgcctggcaccattgccttcaccgatgcccacattgaggtggacatcacctatgccgagtacttcgagatgtctgtg cgcctggccgaggccatgaagaggtacggcctgaacaccaaccaccgcatcgtggtgtgctctgagaactctctgcagttcttcatgccag tgctgggcgccctgttcatcggagtggccgtggcccctgctaacgacatttacaacgagcgcgagctgctgaacagcatgggcatttctca gcctaccgtggtgttcgtgtctaagaagggcctgcagaagatcctgaacgtgcagaagaagctgcctatcatccagaagatcatcatcatg gactctaagaccgactaccagggcttccagagcatgtacacattcgtgacatctcatctgcctcctggcttcaacgagtacgacttcgtgcca gagtctttcgacagggacaaaaccattgccctgatcatgaacagctctgggtctaccggcctgcctaagggcgtggccctgcctcatcgca ccgcctgtgtgcgcttctctcacgcccgcgaccctattttcggcaaccagatcatccccgacaccgctattctgagcgtggtgccattccacc acggcttcggcatgttcaccaccctgggctacctgatttgcggctttcgggtggtgctgatgtaccgcttcgaggaggagctgttcctgcgca gcctgcaagactacaaaattcagtctgccctgctggtgccaaccctgttcagcttcttcgctaagagcaccctgatcgacaagtacgacctgt ctaacctgcacgagattgcctctggcggcgccccactgtctaaggaggtgggcgaagccgtggccaagcgctttcatctgccaggcatcc gccagggctacggcctgaccgagacaaccagcgccattctgattaccccagagggcgacgacaagcctggcgccgtgggcaaggtgg tgccattcttcgaggccaaggtggtggacctggacaccggcaagaccctgggagtgaaccagcgcggcgagctgtgtgtgcgcggccc tatgattatgtccggctacgtgaataaccctgaggccacaaacgccctgatcgacaaggacggctggctgcactctggcgacattgcctact gggacgaggacgagcacttcttcatcgtggaccgcctgaagtctctgatcaagtacaagggctaccaggtggccccagccgagctggag tctatcctgctgcagcaccctaacattttcgacgccggagtggccggcctgcccgacgacgatgccggcgagctgcctgccgccgtcgtc gtgctggaacacggcaagaccatgaccgagaaggagatcgtggactatgtggccagccaggtgacaaccgccaagaagctgcgcggc ggagtggtgttcgtggacgaggtgcccaagggcctgaccggcaagctggacgcccgcaagatccgcgagatcctgatcaaggctaaga aaggcggcaagatcgccgtgtaataattctagagtcggggcggccggccgcttcgagcagacatgataagatacattgatgagtttggac aaaccacaactagaatgcagtgaaaaaaatgctttatttgtgaaatttgtgatgctattgctttatttgtaaccattataagctgcaataaacaagt taacaacaacaattgcattcattttatgtttcaggttcagggggaggtgtgggaggttttttaaagcaagtaaaacctctacaaatgtggtaaaa tcgataaggatccaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatga gacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcatt ttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactgga tctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattat cccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagca tcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcg gaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccat accaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcc cggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataa atctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacg gggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagttta ctcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgt gagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaaca aaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagat accaaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttac cagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaa cggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccac gcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccaggggga aacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatgga aaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatggctcgac; >ACVR1-optACVR1 amiR-sensor plasmids nucleic acid sequence SEQ ID NO: 24 agatctgcgcagcaccatggcctgaaataacctctgaaagaggaacttggttaggtaccttctgaggcggaaagaaccagctgtggaatgt gtgtcagttagggtgtggaaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccaggtgtgg aaagtccccaggctccccagcaggcagaagtatgcaaagcatgcatctcaattagtcagcaaccatagtcccgcccctaactccgcccatc ccgcccctaactccgcccagttccgcccattctccgccccatggctgactaattttttttatttatgcagaggccgaggccgcctcggcctctg agctattccagaagtagtgaggaggcttttttggaggcctaggcttttgcaaaaagatgattcttctgacacaacagtctcgaacttaagctgc agaagttggtcgtgaggcactgggcaggtaagtatcaaggttacaagacaggtttaaggagaccaatagaaactgggcttgtcgagacag agaagactatgcgtttctgataggcacctattggtatactgacatccactttgcctttctctccacaggtgtccactcccagttcaattacagct cttaaggctagagtacttaatacgactcactataggctagccaccatggcttccaaggtgtacgaccccgagcaacgcaaacgcatgatca ctgggcctcagtggtgggctcgctgcaagcaaatgaacgtgctggactccttcatcaactactatgattccgagaagcacgccgagaacgc cgtgatttttctgcatggtaacgctgcctccagctacctgtggaggcacgtcgtgcctcacatcgagcccgtggctagatgcatcatccctga tctgatcggaatgggtaagtccggcaagagcgggaatggctcatatcgcctcctggatcactacaagtacctcaccgcttggttcgagctgc tgaaccttccaaagaaaatcatctttgtgggccacgactggggggcttgtctggcctttcactactcctacgagcaccaagacaagatcaag gccatcgtccatgctgagagtgtcgtggacgtgatcgagtcctgggacgagtggcctgacatcgaggaggatatcgccctgatcaagagc gaagagggcgagaaaatggtgcttgagaataacttcttcgtcgagaccatgctcccaagcaagatcatgcggaaactggagcctgagga gttcgctgcctacctggagccattcaaggagaagggcgaggttagacggcctaccctctcctggcctcgcgagatccctctcgttaaggga ggcaagcccgacgtcgtccagattgtccgcaactacaacgcctaccttcgggccagcgacgatctgcctaagatgttcatcgagtccgacc ctgggttcttttccaacgctattgtcgagggagctaagaagttccctaacaccgagttcgtgaaggtgaagggcctccacttcagccaggag gacgctccagatgaaatgggtaagtacatcaagagcttcgtggagcgcgtgctgaagaacgagcagtaattctaggcgatcgctcgaggg tgcagaggaccgtggcccggcagatcaccctgctggagtgcggccgctggccgcaataaaatatctttattttcattacatctgtgtgttggtt ttttgtgtgaggatctaaatgagtcttcggacctcgcgggggccgcttaagcggtggttagggtttgtctgacgcggggggagggggaagg aacgaaacactctcattcggaggcggctcggggtttggtcttggtggccacgggcacgcagaagagcgccgcgatcctcttaagcaccc ccccgccctccgtggaggcgggggtttggtcggcgggtggtaactggcgggccgctgactcgggcgggtcgcgcgccccagagtgtg accttttcggtctgctcgcagacccccgggcggcgccgccgcggcggcgacgggctcgctgggtcctaggctccatggggaccgtatac gtggacaggctctggagcatccgcacgactgcggtgatattaccggagaccttctgcgggacgagccgggtcacgcggctgacgcgga gcgtccgttgggcgacaaacaccaggacggggcacaggtacactatcttgtcacccggaggcgcgagggactgcaggagcttcaggg agtggcgcagctgcttcatccccgtggcccgttgctcgcgtttgctggcggtgtccccggaagaaatatatttgcatgtctttagttctatgatg acacaaaccccgcccagcgtcttgtcattggcgaattcgaacacgcagatgcagtcggggcggcgcggtcccaggtccacttcgcatatt aaggtgacgcgtgtggcctcgaacaccgagcgaccctgcagcgacccgcttaaaagcttggcattccggtactgttggtaaagccaccat ggccgatgctaagaacattaagaagggccctgctcccttctaccctctggaggatggcaccgctggcgagcagctgcacaaggccatga agaggtatgccctggtgcctggcaccattgccttcaccgatgcccacattgaggtggacatcacctatgccgagtacttcgagatgtctgtg cgcctggccgaggccatgaagaggtacggcctgaacaccaaccaccgcatcgtggtgtgctctgagaactctctgcagttcttcatgccag tgctgggcgccctgttcatcggagtggccgtggcccctgctaacgacatttacaacgagcgcgagctgctgaacagcatgggcatttctca gcctaccgtggtgttcgtgtctaagaagggcctgcagaagatcctgaacgtgcagaagaagctgcctatcatccagaagatcatcatcatg gactctaagaccgactaccagggcttccagagcatgtacacattcgtgacatctcatctgcctcctggcttcaacgagtacgacttcgtgcca gagtctttcgacagggacaaaaccattgccctgatcatgaacagctctgggtctaccggcctgcctaagggcgtggccctgcctcatcgca ccgcctgtgtgcgcttctctcacgcccgcgaccctattttcggcaaccagatcatccccgacaccgctattctgagcgtggtgccattccacc acggcttcggcatgttcaccaccctgggctacctgatttgcggctttcgggtggtgctgatgtaccgcttcgaggaggagctgttcctgcgca gcctgcaagactacaaaattcagtctgccctgctggtgccaaccctgttcagcttcttcgctaagagcaccctgatcgacaagtacgacctgt ctaacctgcacgagattgcctctggcggcgccccactgtctaaggaggtgggcgaagccgtggccaagcgctttcatctgccaggcatcc gccagggctacggcctgaccgagacaaccagcgccattctgattaccccagagggcgacgacaagcctggcgccgtgggcaaggtgg tgccattcttcgaggccaaggtggtggacctggacaccggcaagaccctgggagtgaaccagcgcggcgagctgtgtgtgcgcggccc tatgattatgtccggctacgtgaataaccctgaggccacaaacgccctgatcgacaaggacggctggctgcactctggcgacattgcctact gggacgaggacgagcacttcttcatcgtggaccgcctgaagtctctgatcaagtacaagggctaccaggtggccccagccgagctggag tctatcctgctgcagcaccctaacattttcgacgccggagtggccggcctgcccgacgacgatgccggcgagctgcctgccgccgtcgtc gtgctggaacacggcaagaccatgaccgagaaggagatcgtggactatgtggccagccaggtgacaaccgccaagaagctgcgcggc ggagtggtgttcgtggacgaggtgcccaagggcctgaccggcaagctggacgcccgcaagatccgcgagatcctgatcaaggctaaga aaggcggcaagatcgccgtgtaataattctagagtcggggcggccggccgcttcgagcagacatgataagatacattgatgagtttggac aaaccacaactagaatgcagtgaaaaaaatgctttatttgtgaaatttgtgatgctattgctttatttgtaaccattataagctgcaataaacaagt taacaacaacaattgcattcattttatgtttcaggttcagggggaggtgtgggaggttttttaaagcaagtaaaacctctacaaatgtggtaaaa tcgataaggatccaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatga gacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcatt ttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactgga tctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattat cccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagca tcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcg gaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccat accaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcc cggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataa atctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacg gggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagttta ctcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgt gagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaaca aaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagat accaaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttac cagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaa cggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccac gcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccaggggga aacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatgga aaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatggctcgac; >AAV-CBA (synthetic intron) (amiR-33-ACVR1-A9)-opt-ACVR1 SEQ ID NO: 25 cttaattaggctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtga gcgagcgagcgcgcagagagggagtggccaactccatcactaggggttccttgtagttaatgattaacccgccatgctacttatctaccag ggtaatggggatcctctagaactatagctagtcgacattgattattgactagttattaatagtaatcaattacggggtcattagttcatagcccat atatggagttccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtat gttcccatagtaacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatc atatgccaagtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttg gcagtacatctacgtattagtcatcgctattaccatgtcgaggccacgttctgcttcactctccccatctcccccccctccccacccccaattttg tatttatttattttttaattattttgtgcagcgatgggggcggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcgg ggcggggcgaggcggagaggtgcggcggcagccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcg gcggccctataaaaagcgaagcgcgcggcgggcgggagcaccaccgcggtggcggccctagagtcgatcgaggaactgaaaaacca gaaagttaactggtaagtttagtctttttgtcttttatttcaggtcccagatctAGGGCTCTGCGTTTGCTCCAGGTAGTC CGCTGCTCCCTTGGGCCTGGGCCCACTGACAGCCCTGGTGCCTCTGGCCGGCTGCAC ACCTCCTGGCGGGCAGCTGTGtgtaatctggtgagccactgtTGTTCTGGCAATACCTGACAGTG GCAGATCAGATTACACACGGAGGCCTGCCCTGACTGCCCACGGTGCCGTGGCCAAA GAGGATCTAAGGGCACCGCTGAGGGCCTACCTAACCATCGTGGGGAATAAGGACA GTGTCACCCctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgtacgg aagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtgaattccgccaccatggtcgatggagtgatgatcct gcctgtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaagctgtatatgtgcgtgtgcgagg gcctgagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgacggcttccacgtgtaccagaagg gctgctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtggagtgctgtcagggcgattggt gtaaccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcacctggaagtgggcctgatcatcct gagcgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcggagaaaccaggagcggctgaatcc aagagatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggccgacctgctggatcacagctgca ccagcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgctggagtgcgtgggcaagggccg gtacggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccgggatgagaagtcttggtttagaga gacagagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatgacctctcgccactcctctacacagc tgtggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactggacacagtgtcttgcctgcggatcgtg ctgtctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagcaatcgcacacactgaagtctaagaa catcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcacagccagtccaccaaccagctggacgtgg gcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaatccaggtggactgcttcgatagctataaga gggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagcaacggcatcgtggaggactacaagccacc cttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggatcagcagaggcccaacatccctaatcgct ggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgttggtatcagaatcctagcgccaggctgaccgccctgcgca tcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctgacctgagggcggccgcgtcgacggatccgatc tttttccctctgccaaaaattatggggacatcatgaagccccttgagcatctgacttctggctaataaaggaaatttattttcattgcaatagtgtg ttggaattttttgtgtctctcactcggaagcaattcgttgatctgaatttcgaccacccataatacccattaccctggtagataagtagcatggcg ggttaatcattaactacaaggaacccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaa ggtcgcccgacgcccgggctttgcccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgtttta caacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagagg cccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgt ggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggc tttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatg gttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaa caacactcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaattta acgcgaattttaacaaaatattaacgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacatt caaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcc cttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacga gtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttct gctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactc accagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaac ttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaacc ggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcg aactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggct ggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtat cgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggt aactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcat gaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcg taatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactg gcttcagcagagcgcagataccaaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacc tcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataagg cgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtga gctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacga gggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcagg ggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttat cccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtga gcgaggaagcggaagagcgcccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttccc gactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgt atgttgtgtggaattgtgagcggataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggc; >AAV-CBA (synthetic intron) (amiR-33-ACVR1-A10)-opt-ACVR1 nucleic acid sequence SEQ ID NO: 26 cttaattaggctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtga gcgagcgagcgcgcagagagggagtggccaactccatcactaggggttccttgtagttaatgattaacccgccatgctacttatctaccag ggtaatggggatcctctagaactatagctagtcgacattgattattgactagttattaatagtaatcaattacggggtcattagttcatagcccat atatggagttccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtat gttcccatagtaacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatc atatgccaagtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttg gcagtacatctacgtattagtcatcgctattaccatgtcgaggccacgttctgcttcactctccccatctcccccccctccccacccccaattttg tatttatttattttttaattattttgtgcagcgatgggggcggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcgg ggcggggcgaggcggagaggtgcggcggcagccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcg gcggccctataaaaagcgaagcgcgcggcgggcgggagcaccaccgcggtggcggccctagagtcgatcgaggaactgaaaaacca gaaagttaactggtaagtttagtctttttgtcttttatttcaggtcccagatctAGGGCTCTGCGTTTGCTCCAGGTAGTC CGCTGCTCCCTTGGGCCTGGGCCCACTGACAGCCCTGGTGCCTCTGGCCGGCTGCAC ACCTCCTGGCGGGCAGCTGTGgtaatctggtgagccactgttTGTTCTGGCAATACCTGAACAGT GGGCGCCAGATTACCACGGAGGCCTGCCCTGACTGCCCACGGTGCCGTGGCCAAAG AGGATCTAAGGGCACCGCTGAGGGCCTACCTAACCATCGTGGGGAATAAGGACAGT GTCACCCctgcaggggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgtacggaag tgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtgaattccgccaccatggtcgatggagtgatgatcctgcct gtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaagctgtatatgtgcgtgtgcgagggcct gagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgacggcttccacgtgtaccagaagggctg ctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtggagtgctgtcagggcgattggtgtaa ccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcacctggaagtgggcctgatcatcctgag cgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcggagaaaccaggagcggctgaatccaag agatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggccgacctgctggatcacagctgcacca gcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgctggagtgcgtgggcaagggccggtac ggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccgggatgagaagtcttggtttagagagac agagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatgacctctcgccactcctctacacagctgt ggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactggacacagtgtcttgcctgcggatcgtgctg tctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagcaatcgcacacagagatctgaagtctaag aacatcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcacagccagtccaccaaccagctggacgtg ggcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaatccaggtggactgcttcgatagctataa gagggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagcaacggcatcgtggaggactacaagcca cccttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggatcagcagaggcccaacatccctaatcg ctggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgttggtatcagaatcctagcgccaggctgaccgccctgcg catcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctgacctgagggcggccgcgtcgacggatccg atctttttccctctgccaaaaattatggggacatcatgaagccccttgagcatctgacttctggctaataaaggaaatttattttcattgcaatagt gtgttggaattttttgtgtctctcactcggaagcaattcgttgatctgaatttcgaccacccataatacccattaccctggtagataagtagcatg gcgggttaatcattaactacaaggaacccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgacc aaaggtcgcccgacgcccgggctttgcccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcg ttttacaacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaag aggcccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcggg tgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgcc ggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtg atggttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactg gaacaacactcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaa atttaacgcgaattttaacaaaatattaacgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaat acattcaaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgt cgcccttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgc acgagtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaa gttctgctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgag tactcaccagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcgg ccaacttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttggg aaccggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactg gcgaactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccg gctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccg tatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcatt ggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatct catgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcg cgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaact ggcttcagcagagcgcagataccaaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatac ctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataag gcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtg agctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacg agggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcag gggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgtta tcccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtga gcgaggaagcggaagagcgcccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttccc gactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgt atgttgtgtggaattgtgagcggataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggc; >AAV-CBA (MBL-amiR-ACVR1-A9)-opt-ACVR1 nucleic acid sequence SEQ ID NO: 27 cttaattaggctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtga gcgagcgagcgcgcagagagggagtggccaactccatcactaggggttccttgtagttaatgattaacccgccatgctacttatctaccag ggtaatggggatcctctagaactatagctagtcgacattgattattgactagttattaatagtaatcaattacggggtcattagttcatagcccat atatggagttccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtat gttcccatagtaacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatc atatgccaagtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttg gcagtacatctacgtattagtcatcgctattaccatgtcgaggccacgttctgcttcactctccccatctcccccccctccccacccccaattttg tatttatttattttttaattattttgtgcagcgatgggggcggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcgg ggcggggcgaggcggagaggtgcggcggcagccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcg gcggccctataaaaagcgaagcgcgcggcgggcgggagcaagctttcagatcgcctggagacgccatccacgctgttttgacctccata gaagacaccgggaccgatccagcctccgcggccgggaacggtgcattggaacgcggattccccgtgccaagagtgacgtaagtaccg cctatagagtctataggcccacccccttggcttcttatgcatgctatactgtttttggcttggggtctatacacccccgcttcctcatgttTGCT GCCCGTGACCAGCACGTCAACGATTTTGTGGGCACGGGCGACACcgcagtgtagtctgagcagt actcgttgctgccgcgcgcgccaccagacataatagctgacagactaacagactgttcctttccatgggtcttttctgcaAGGGCTCT GCGTTTGCTCCAGGTAGTCCGCTGCTCCCTTGGGCCTGGGCCCACTGACAGCCCTGG TGCCTCTGGCCGGCTGCACACCTCCTGGCGGGCAGCTGTGtgtaatctggtgagccactgtTGTT CTGGCAATACCTGACAGTGGCAGATCAGATTACACACGGAGGCCTGCCCTGACTGC CCACGGTGCCGTGGCCAAAGAGGATCTAAGGGCACCGCTGAGGGCCTACCTAACCA TCGTGGGGAATAAGGACAGTGTCACCCtgcagtcaccgtcgccgccaccggtgaattccgccaccatggtcgat ggagtgatgatcctgcctgtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaagctgtatatg tgcgtgtgcgagggcctgagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgacggcttccac gtgtaccagaagggctgctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtggagtgctgt cagggcgattggtgtaaccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcacctggaagtg ggcctgatcatcctgagcgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcggagaaaccagg agcggctgaatccaagagatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggccgacctgctg gatcacagctgcaccagcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgctggagtgcgtg ggcaagggccggtacggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccgggatgagaagt cttggtttagagagacagagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatgacctctcgccac tcctctacacagctgtggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactggacacagtgtcttg cctgcggatcgtgctgtctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagcaatcgcacacag agatctgaagtctaagaacatcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcacagccagtccac caaccagctggacgtgggcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaatccaggtggac tgcttcgatagctataagagggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagcaacggcatcgtg gaggactacaagccacccttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggatcagcagaggc ccaacatccctaatcgctggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgttggtatcagaatcctagcgccag gctgaccgccctgcgcatcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctgacctgaggatccgatc tttttccctctgccaaaaattatggggacatcatgaagccccttgagcatctgacttctggctaataaaggaaatttattttcattgcaatagtgtg ttggaattttttgtgtctctcactcggaagcaattcgttgatctgaatttcgaccacccataatacccattaccctggtagataagtagcatggcg ggttaatcattaactacaaggaacccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaa ggtcgcccgacgcccgggctttgcccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgtttta caacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagagg cccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgt ggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggc tttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatg gttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaa caacactcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaattta acgcgaattttaacaaaatattaacgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacatt caaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcc cttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacga gtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttct gctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactc accagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaac ttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaacc ggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcg aactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggct ggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtat cgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggt aactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcat gaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcg taatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactg gcttcagcagagcgcagataccaaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacc tcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataagg cgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtga gctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacga gggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcagg ggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttat cccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtga gcgaggaagcggaagagcgcccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttccc gactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgt atgttgtgtggaattgtgagcggataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggc; >AAV-CBA (MBL-amiR-ACVR1-A10)-opt-ACVR1 nucleic acid sequence SEQ ID NO: 28 cttaattaggctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtga gcgagcgagcgcgcagagagggagtggccaactccatcactaggggttccttgtagttaatgattaacccgccatgctacttatctaccag ggtaatggggatcctctagaactatagctagtcgacattgattattgactagttattaatagtaatcaattacggggtcattagttcatagcccat atatggagttccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtat gttcccatagtaacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatc atatgccaagtacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttg gcagtacatctacgtattagtcatcgctattaccatgtcgaggccacgttctgcttcactctccccatctcccccccctccccacccccaattttg tatttatttattttttaattattttgtgcagcgatgggggcggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcgg ggcggggcgaggcggagaggtgcggcggcagccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcg gcggccctataaaaagcgaagcgcgcggcgggcgggagcaagctttcagatcgcctggagacgccatccacgctgttttgacctccata gaagacaccgggaccgatccagcctccgcggccgggaacggtgcattggaacgcggattccccgtgccaagagtgacgtaagtaccg cctatagagtctataggcccacccccttggcttcttatgcatgctatactgtttttggcttggggtctatacacccccgcttcctcatgttTGCT GCCCGTGACCAGCACGTCAACGATTTTGTGGGCACGGGCGACACcgcagtgtagtctgagcagt actcgttgctgccgcgcgcgccaccagacataatagctgacagactaacagactgttcctttccatgggtcttttctgcaAGGGCTCT GCGTTTGCTCCAGGTAGTCCGCTGCTCCCTTGGGCCTGGGCCCACTGACAGCCCTGG TGCCTCTGGCCGGCTGCACACCTCCTGGCGGGCAGCTGTGgtaatctggtgagccactgttTGTT CTGGCAATACCTGAACAGTGGGACGCCAGATTACCACGGAGGCCTGCCCTGACTGC CCACGGTGCCGTGGCCAAAGAGGATCTAAGGGCACCGCTGAGGGCCTACCTAACCA TCGTGGGGAATAAGGACAGTGTCACCCtgcagtcaccgtcgccgccaccggtgaattccgccaccatggtcgat ggagtgatgatcctgcctgtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaagctgtatatg tgcgtgtgcgagggcctgagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgacggcttccac gtgtaccagaagggctgctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtggagtgctgt cagggcgattggtgtaaccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcacctggaagtg ggcctgatcatcctgagcgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcggagaaaccagg agcggctgaatccaagagatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggccgacctgctg gatcacagctgcaccagcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgctggagtgcgtg ggcaagggccggtacggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccgggatgagaagt cttggtttagagagacagagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatgacctctcgccac tcctctacacagctgtggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactggacacagtgtcttg cctgcggatcgtgctgtctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagcaatcgcacacag agatctgaagtctaagaacatcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcacagccagtccac caaccagctggacgtgggcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaatccaggtggac tgcttcgatagctataagagggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagcaacggcatcgtg gaggactacaagccacccttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggatcagcagaggc ccaacatccctaatcgctggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgttggtatcagaatcctagcgccag gctgaccgccctgcgcatcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctgacctgaggatccgatc tttttccctctgccaaaaattatggggacatcatgaagccccttgagcatctgacttctggctaataaaggaaatttattttcattgcaatagtgtg ttggaattttttgtgtctctcactcggaagcaattcgttgatctgaatttcgaccacccataatacccattaccctggtagataagtagcatggcg ggttaatcattaactacaaggaacccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaa ggtcgcccgacgcccgggctttgcccgggcggcctcagtgagcgagcgagcgcgcagccttaattaacctaattcactggccgtcgtttta caacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagagg cccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatgggacgcgccctgtagcggcgcattaagcgcggcgggtgt ggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggc tttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatg gttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaa caacactcaaccctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaattta acgcgaattttaacaaaatattaacgcttacaatttaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacatt caaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcc cttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacga gtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttct gctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactc accagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaac ttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaacc ggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcg aactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggct ggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtat cgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggt aactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcat gaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcg taatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactg gcttcagcagagcgcagataccaaatactgttcttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacc tcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataagg cgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtga gctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacga gggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcagg ggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttat cccctgattctgtggataaccgtattaccgcctttgagtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtga gcgaggaagcggaagagcgcccaatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttccc gactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgt atgttgtgtggaattgtgagcggataacaatttcacacaggaaacagctatgaccatgattacgccagatttaattaaggc; >AAV-ABE C-terminal sghACVR1 nucleic acid sequence SEQ ID NO: 29 ccaactccatcactaggggttcctgcggccgcaaggtcgggcaggaagagggcctatttcccatgattccttcatatttgcatatacgataca aggctgttagagagataattagaattaatttgactgtaaacacaaagatattagtacaaaatacgtgacgtagaaagtaataatttcttgggtag tttgcagttttaaaattatgattaaaatggactatcatatgcttaccgtaacttgaaagtatttcgatttcttggctttatatatcttgtggaaaggac gaaacaccGGCTCaCCAGATTACACTGTgttttagagctagaaatagcaagttaaaataaggctagtccgttatcaacttga aaaagtggcaccgagtcggtgctttttttctcgagccatagagcccaccgcatccccagcatgcctgctattgtcttcccaatcctcccccttg ctgtcctgccccaccccaccccccagaatagaatgacacctactcagacaatgcgatgcaatttcctcattttattaggaaaggacagtggg agtggcaccttccagggtcaaggaaggcacgggggaggggcaaacaacagatggctggcaactagaaggcacagtcgcaccacgga attgtcagtgcccaacagccgagcccctgtccagcagcgggcaaggcaggcggcgatgagttccgccgtggcaagaactaaccaggat ttatacaaggaggagaaaatgaaagccatacgggaagcaatagcatgatacaaaggcattaaagcagcgtatccacatagcgtaaaagg agcaacatagttaagaataccagtcaatctttcacaaattttgtaatccagaggttgattatcagatcttagactttcctcttcttcttgggctcgaa ttcgctgccgtcggcggttctttttgagccgccagagtcacctcccagctgagacaggtcgatccgtgtctcgtacaggccggtgatgctct ggtggatcagggtggcgtccagcacctctttggtgctggtgtacctcttccggtcgatggtggtgtcaaagtacttgaaggcggcaggggct cccagattggtcagggtaaacaggtggatgatattctcggcctgctctctgatgggcttatcccggtgcttgttgtaggcggacagcactttgt ccagattagcgtcggccaggatcactctcttggagaactcgctgatctgctcgatgatctcgtccaggtagtgcttgtgctgttccacaaaca gctgtttctgctcattatcctcgggggagcccttcagcttctcatagtggctggccaggtacaggaagttcacatatttggagggcagggcca gttcgtttcccttctgcagttcgccggcagaggccagcattctcttccggccgttttccagctcgaacagggagtacttaggcagcttgatgat caggtcctttttcacttctttgtagcccttggcttccagaaagtcgatgggattcttctcgaagctgcttctttccatgatggtgatccccagcagc tctttcacactcttcagtttcttggacttgcccttttccactttggccaccaccagcacagaataggccacggtggggctgtcgaagccgccgt acttcttagggtcccagtccttctttctggcgatcagcttatcgctgttcctcttgggcaggatagactctttgctgaagccgcctgtctgcacct cggtctttttcacgatattcacttggggcatgctcagcactttccgcacggtggcaaaatcccggcccttatcccacacgatctccccggtttc gccgtttgtctcgatcagaggccgcttccggatctcgccgttggccagggtaatctcggtcttgaaaaagttcatgatgttgctgtagaagaa gtacttggcggtagccttgccgatttcctgctcgctcttggcgatcatcttccgcacgtcgtacaccttgtagtcgccgtacacgaactcgcttt ccagcttagggtactttttgatcagggcggttcccacgacggcgttcaggtaggcgtcgtgggcgtggtggtagttgttgatctcgcgcactt tgtaaaactggaaatccttccggaaatcggacaccagcttggacttcagggtgatcactttcacttcccggatcagcttgtcattctcgtcgtac ttagtgttcatccgggagtccaggatctgtgccacgtgctttgtgatctgccgggtttccaccagctgtctcttgatgaagccggccttatccag ttcgctcaggccgcctctctcggccttggtcagattgtcgaactttctctgggtaatcagcttggcgttcagcagctgccgccagtagttcttca tcttcttcacgacctcttcggagggcacgttgtcgctcttgccccggttcttgtcgcttctggtcagcaccttgttgtcgatggagtcgtccttca gaaagctctgaggcacgatatggtccacatcgtagtcggacagccggttgatgtccagttcctggtccacgtacatatcccgcccattctgc aggtagtacaggtacagcttctcgttctgcagctgggtgttttccacggggtgttctttcaggatctggctgcccagctctttgatgccctcttcg atccgcttcattctctcgcggctgttcttctgtcccttctgggtggtctggttctctctggccatttcgatcacgatgttctcgggcttgtgccggc ccatcactttcacgagctcgtccaccaccttcactgtctgcaggatgcccttcttaatggcggggctgccggccagattggcaatgtgctcgt gcaggctatcgccctggccggacacctgggctttctggatgtcctctttaaaggtcaggctgtcgtcgtggatcagctgcatgaagtttctgtt ggcgaagccgtcggacttcaggaaatccaggattgtcttgccggactgcttgtcccggatgccgttgatcagcttccggctcagcctgccc cagccggtgtatctccgccgcttcagctgcttcatcactttgtcgtcgaacaggtgggcataggttttcagccgttcctcgatcatctctctgtc ctcaaacagtgtcagggtcagcacgatatcttccagaatgtcctcgttttcctcattgtccaggaagtccttgtccttgataattttcagcagatc gtggtatgtgcccagggaggcgttgaaccgatcttccacgccggagatttccacggagtcgaagcaattgctggcgataaagccattcttc agggcgaagttgtgatcccgctccacgccgatgtcgtacacgttctgctttcccaggtatttccgtgtagcaatcttgatgactttccgcttcttc tttggtgactcgaactcgcttccgtcggctgtccgtttcatggtggcaccggtccaacctgaaaaaaagtgatttcaggcaggtgctccaggt aattaaacattaataccccaccaaccaaccatcccttaaacccttacctcttgctcagctaattacagcccggaggagaagggccgtcccgc ccgctcacctgtgggagtaacgcggtcagtcagagccggggcgggcggcgcgaggcggcggcggagcggggcacggggcgaagg cagcgtcgcagcgactcccgcccgccgcgcgcttcgctttttatagggccgccgccgccgccgcctcgccataaaaggaaactttcgga gcgcgccgctctgattggctgccgccgcacctctccgcctcgccccgccccgcccctcgccccgccccgccccgcctggcgcgcgccc cccccccccccccgcccccatcgctgcacaaaataattaaaaaataaataaatacaaaattgggggtggggaggggggggagatgggg agagtgaagcagaacgtggggctcacctcgaccatggtaatagcgatgactaatacgtagatgtactgccaagtaggaaagtcccataag gtcatgtactgggcacaatgccaggcgggccatttaccgtcattgacgtcaatagggggcgtacttggcatatgatacacttgatgtactgcc aagtgggcagtttaccgtaaatactccacccattgacgtcaatggaaagtccctattggcgttactattgacgtcaatgggcgggggtcgttg ggcggtcagccaggcgggccatttaccgtaagttatgtaacgggtaccctgatctagaggccgcaggaacccctagtgatggagttggcc actccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttgcccgggcggcctcagtgag cgagcgagcgcgcagccttaattaaatctggcgtaatcatggtcatagctgtttcctgtgtgaaattgttatccgctcacaattccacacaacat acgagccggaagcataaagtgtaaagcctggggtgcctaatgagtgagctaactcacattaattgcgttgcgctcactgcccgctttccagt cgggaaacctgtcgtgccagctgcattaatgaatcggccaacgcgcggggagaggcggtttgcgtattgggcgctcttccgcttcctcgct cactgactcgctgcgctcggtcgttcggctgcggcgagcggtatcagctcactcaaaggcggtaatacggttatccacagaatcaggggat aacgcaggaaagaacatgtgagcaaaaccgcagcaaaaggccaggaaccgtaaaaaggccgcgttgctggcgtttttccataggctccg cccccctgacgagcatcacaaaaatcgacgctcaagtcagaggtggcgaaacccgacaggactataaagataccaggcgtttccccctg gaagctccctcgtgcgctctcctgttccgaccctgccgcttaccggatacctgtccgcctttctcccttcgggaagcgtggcgctttctcatag ctcacgctgtaggtatctcagttcggtgtaggtcgttcgctccaagctgggctgtgtgcacgaaccccccgttcagcccgaccgctgcgcct tatccggtaactatcgtcttgagtccaacccggtaagacacgacttatcgccactggcagcagccactggtaacaggattagcagagcgag gtatgtaggcggtgctacagagttcttgaagtggtggcctaactacggctacactagaaggacagtatttggtatctgcgctctgctgaagcc agttaccttcggaaaaagagttggtagctcttgatccggcaaacaaaccaccgctggtagcggtggtttttttgtttgcaagcagcagattacg cgcagaaaaaaaggatctcaagaagatcctttgatcttttctacggggtctgacgctcagtggaacgaaaactcacgttaagggattttggtc atgagattatcaaaaaggatcttcacctagatccttttaaattaaaaatgaagttttaaatcaatctaaagtatatatgagtaaacttggtctgaca gttaccaatgcttaatcagtgaggcacctatctcagcgatctgtctatttcgttcatccatagttgcctgactccccgtcgtgtagataactacga tacgggagggcttaccatctggccccagtgctgcaatgataccgcgagacccacgctcaccggctccagatttatcagcaataaaccagc cagccggaagggccgagcgcagaagtggtcctgcaactttatccgcctccatccagtctattaattgttgccgggaagctagagtaagtagt tcgccagttaatagtttgcgcaacgttgttaccattactacaggcatcgtggtgtcacgctcgtcgtttggtatggcttcattcagctccggttcc caacgatcaaggcgagttacatgatcccccatgttgtgcaaaaaagcggttagctccttcggtcctccgatcgttgtcagaagtaagttggcc gcagtgttatcactcatggttatggcagcactgcataattctcttactgtcatgccatccgtaagatgcttttctgtgactggtgagtactcaacc aagtcattctgagaatagtgtatgcggcgaccgagttgctcttgcccggcgtcaatacgggataataccgcgccacatagcagaactttaaa agtgctcatcattggaaaacgttcttcggggcgaaaactctcaaggatcttaccgctgttgagatccagttcgatgtaacccactcgtgcacc caactgatcttcagcatcttttactttcaccagcgtttctgggtgagcaaaaacaggaaggcaaaatgccgcaaaaaagggaataagggcg acacggaaatgttgaatactcatactcttcctttttcaatattattgaagcatttatcagggttattgtctcatgagcggatacatatttgaatgtattt agaaaaataaacaaataggggttccgcgcacatttccccgaaagatgccacctgaaattataaacgttaatattttgttaaaattcgcgttaaat ttttgttaaatcagctcattttttaaccaataggccgaaatcggcaaaatcccttataaatcaaaagaatagaccgagatagggttgagtgttgtt ccagtttggaacaagagtccactattaaagaacgtggactccaacgtcaaagggcgaaaaaccgtctatcagggcgatggcccactacgt gaaccatcaccctaatcaagttttttggggtcgaggtgccgtaaagcactaaatcggaaccctaaagggagcccccgatttagagcttgacg gggaaagccggcgaacgtggcgagaaaggaagggaagaaagcgaaaggagcgggcgctagggcgctggcaagtgtagcggtcac gctgcgcgtaaccaccacacccgccgcgcttaatgcgccgctacagggcgcgtcccattcgccattcaggctgcgcaactgttgggaag ggcgatcggtgcgggcctcttcgctattacgccagctggcgaaagggggatgtgctgcaaggcgattaagttgggtaacgccagggttttc ccagtcacgacgttgtaaaacgacggccagtgaattaggttaattaaggctgcgcgctcgctcgctcactgaggccgcccgggcaaagcc cgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcgagcgcgcagagagggagtgg; >PB2 (NF-kB promoter) nucleic acid sequence SEQ ID NO: 30 TGAGCTCACAGAGGGGACTTTCCGAGAGATCTACAGAGGGGACTTTCCGAGAGCGA GCTTGGGCTGCAGGTCGACCGTCCATCCATTCACAGCGCTTCTATAAAGGCGCCAGC TGAGGCGCCTACTACTCCAACCGCGACTGCAGCGAGCAACTGAGAAGACTGGATAG AGCCGGCGGTTCCGCGAACGAGCAGTGACCGCGCTCCCACCCAGCTCTGCTCTGCA GCTCCACCAGTGTCTCTCTAGA; >BRE nucleic acid sequence SEQ ID NO: 31 GCTTCGCGCCCTAAGTCTGCAGGTGACGGGCTCAGGGGCGGGGGCTGGGTGGGGGG GAGCGGAGAATGCTCCAGCCCAGTTTGCCGTCTCCATGGCGACCGCCCGCGCGGCG CCAGCCTGACAGCCCGTCCGGGTTTTATGAATGGGTGACGTCACGGGCCTGGCGTCT AACGGTCTGAGCCGCTTGTTCAGACGCTGACACAGACCAGCCCGGGAAAGG; >AAV BRE-NFkB-Gaussia nucleic acid sequence SEQ ID NO: 32 cctgcaggcagctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagt gagcgagcgagcgcgcagagagggagtggccaactccatcactaggggttcctgccgcgtcgacattgattattgactctggtcgttacat aacttacggtaaatggcccgcctggctgaccgcccaacgaccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaata gggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccccta ttgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgaggcc acgttctgcttcacGCTTCGCGCCCTAAGTCTGCAGGTGACGGGCTCAGGGGCGGGGGCTGG GTGGGGGGGAGCGGAGAATGCTCCAGCCCAGTTTGCCGTCTCCATGGCGACCGCCC GCGCGGCGCCAGCCTGACAGCCCGTCCGGGTTTTATGAATGGGTGACGTCACGGGC CTGGCGTCTAACGGTCTGAGCCGCTTGTTCAGACGCTGACACAGACCAGCCCGGGA AAGGTGAGCTCACAGAGGGGACTTTCCGAGAGATCTACAGAGGGGACTTTCCGAGA GCGAGCTTGGGCTGCAGGTCGACCGTCCATCCATTCACAGCGCTTCTATAAAGGCG CCAGCTGAGGCGCCTACTACTCCAACCGCGACTGCAGCGAGCAACTGAGAAGACTG GATAGAGCCGGCGGTTCCGCGAACGAGCAGTGACCGCGCTCCCACCCAGCTCTGCT CTGCAGCTCCACCAGTGTCTCTCTAGAgccaccgcggtggcggccctagagtcgatcgaggaactgaaaaacc agaaagttaactggtaagtttagtctttttgtcttttatttcaggtcccggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttg cctttacttctaggcctgtacggaagtgttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatctagc atgggagtcaaagttctgtttgccctgatctgcatcgctgtggccgaggccaagcccaccgagaacaacgaagacttcaacatcgtggccg tggccagcaacttcgcgaccacggatctcgatgctgaccgcgggaagttgcccggcaagaagctgccgctggaggtgctcaaagagat ggaagccaatgcccggaaagctggctgcaccaggggctgtctgatctgcctgtcccacatcaagtgcacgcccaagatgaagaagttcat cccaggacgctgccacacctacgaaggcgacaaagagtccgcacagggcggcataggcgaggcgatcgtcgacattcctgagattcct gggttcaaggacttggagcccatggagcagttcatcgcacaggtcgatctgtgtgtggactgcacaactggctgcctcaaagggcttgcca acgtgcagtgttctgacctgctcaagaagtggctgccgcaacgctgtgcgacctttgccagcaagatccagggccaggtggacaagatca agggggccggtggtgactagctcgacgctgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttc cttgaccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggg gtggggtggggcaggacagcaagggggaggattgggaagacaaggccgcaggaacccctagtgatggagttggccactccctctctg cgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttgcccgggcggcctcagtgagcgagcgagcg cgcagctgcctgcaggggcgcctgatgcggtattttctccttacgcatctgtgcggtatttcacaccgcatacgtcaaagcaaccatagtacg cgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctt tcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacg gcacctcgaccccaaaaaacttgatttgggtgatggttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtcc acgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcgggctattcttttgatttataagggattttgccgatttcggc ctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgtttacaattttatggtgcactctcagtacaatct gctctgatgccgcatagttaagccagccccgacacccgccaacacccgctgacgcgccctgacgggcttgtctgctcccggcatccgctt acagacaagctgtgaccgtctccgggagctgcatgtgtcagaggttttcaccgtcatcaccgaaacgcgcgagacgaaagggcctcgtga tacgcctatttttataggttaatgtcatgataataatggtttcttagacgtcaggtggcacttttcggggaaatgtgcgcggaacccctatttgttta tttttctaaatacattcaaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaac atttccgtgtcgcccttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatca gttgggtgcacgagtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgag cacttttaaagttctgctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgac ttggttgagtactcaccagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataa cactgcggccaacttacactgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccag atcgagggaaccggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgagcgcaaa ctattaactggcgaactacttactctagcacccggcaacaattaatagactggatggaggcggataaagagcaggaccacactgcgctcg gcccaccggctggctggatattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaa gccctcccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactg attaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcattttttaatttaaaaggatctaggtgaagatccttt ttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatcct ttttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttcc gaaggtaactggcttcagcagagcgcagataccaaatactgtccactagtgtagccgtagttaggccaccacttcaagaactctgtagcac cgcctacatacctcgctctgctaatcctgaaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagtt accggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagata cctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacagg agagcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtg atgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctttttacggacctggccttttgctggccttttgctcacatgt; >AAV CBA-FST-TNFR2-miR122 nucleic acid sequence SEQ ID NO: 33 cctgcaggcagctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagt gagcgagcgagcgcgcagagagggagtggccaactccatcactaggggttcctgccgcgtcgacattgattattgactctggtcgttacat aacttacggtaaatggcccgcctggctgaccgcccaacgaccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaata gggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccccta ttgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgaggcc acgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcgggggg ggggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggca gccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcgg gcgggagcgggatcagccaccgcggtggcggccctagagtcgatcgaggaactgaaaaaccagaaagttaactggtaagtttagtctttt tgtcttttatttcaggtcccggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgtacggaagt gttacttctgctctaaaagctgcggaattgtacccgcggccgatccaCCGGTgccaccATGGTCCGCGCGAGGCACC AGCCGGGTGGGCTTTGCCTCCTGCTGCTGCTGCTCTGCCAGTTCATGGAGGACCGCA GTGCCCAGGCTGGGAACTGCTGGCTCCGTCAAGCGAAGAACGGCCGCTGCCAGGTC CTGTACAAGACCGAACTGAGCAAGGAGGAGTGCTGCAGCACCGGCCGGCTGAGCA CCTCGTGGACCGAGGAGGACGTGAATGACAACACACTCTTCAAGTGGATGATTTTC AACGGGGGCGCCCCCAACTGCATCCCCTGTAAAGAAACGTGTGAGAACGTGGACTG TGGACCTGGGAAAAAATGCCGAATGAACAAGAAGAACAAACCCCGCTGCGTCTGC GCCCCGGATTGTTCCAACATCACCTGGAAGGGTCCAGTCTGCGGGCTGGATGGGAA AACCTACCGCAATGAATGTGCACTCCTAAAGGCAAGATGTAAAGAGCAGCCAGAAC TGGAAGTCCAGTACCAAGGCAGATGTAAAAAGACTTGTCGGGATGTTTTCTGTCCA GGCAGCTCCACATGTGTGGTGGACCAGACCAATAATGCCTACTGTGTGACCTGTAA TCGGATTTGCCCAGAGCCTGCTTCCTCTGAGCAATATCTCTGTGGGAATGATGGAGT CACCTACTCCAGTGCCTGCCACCTGAGAAAGGCTACCTGCCTGCTGGGCAGATCTAT TGGATTAGCCTATGAGGGAAAGTGTATCAAAGCAAAGTCCTGTGAAGATATCCAGT GCACTGGTGGGAAAAAATGTTTATGGGATTTCAAGGTTGGGAGAGGCCGGTGTTCC CTCTGTGATGAGCTGTGCCCTGACAGTAAGTCGGATGAGCCTGTCTGTGCCAGTGAC AATGCCACTTATGCCAGCGAGTGTGCCATGAAGGAAGCTGCCTGCTCCTCAGGTGT GCTACTGGAAGTAAAGCACTCCGGATCTTGCAACggatccggagagggcagaggaagtctgctaacatg cggtgacgtcgaggagaatcctggacctatggcgcccgtcgccgtctgggccgcgctggccgtcggactggagctctgggctgcggcg cacgccttgcccgcccaggtggcatttacaccctacgccccggagcccgggagcacatgccggctcagagaatactatgaccagacagc tcagatgtgctgcagcaaatgctcgccgggccaacatgcaaaagtcttctgtaccaagacctcggacaccgtgtgtgactcctgtgaggac agcacatacacccagctctggaactgggttcccgagtgcttgagctgtggctcccgctgtagctctgaccaggtggaaactcaagcctgca ctcgggaacagaaccgcatctgcacctgcaggcccggctggtactgcgcgctgagcaagcaggaggggtgccggctgtgcgcgccgc tgcgcaagtgccgcccgggcttcggcgtggccagaccaggaactgaaacatcagacgtggtgtgcaagccctgtgccccggggacgtt ctccaacacgacttcatccacggatatttgcaggccccaccagatctgtaacgtggtggccatccctgggaatgcaagcatggatgcagtct gcacgtccacgtcccccacccggagtatggccccaggggcagtacacttaccccagccagtgtccacacgatcccaacacacgcagcc aactccagaacccagcactgctccaagcacctccttcctgctcccaatgggccccagccccccagctgaagggagcactggcgacttcg ctcttccagtttgaGCGGCCGCcaaacaccattgtcacactccaacaaacaccattgtcacactccaacaaacaccattgtcacactcc aGCGGCCGCACGCGTTgatcagcctcgactgtgccttctagttgccagccatctgttgtttgcccctcccccgtgccttccttga ccctggaaggtgccactcccactgtcctttcctaataaaatgaggaaattgcatcgcattgtctgagtaggtgtcattctattctggggggtgg ggtggggcaggacagcaagggggaggattgggaagacaaggccgcaggaacccctagtgatggagttggccactccctctctgcgcg ctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgggctttgcccgggcggcctcagtgagcgagcgagcgcgca gctgcctgcaggggcgcctgatgcggtattttctccttacgcatctgtgcggtatttcacaccgcatacgtcaaagcaaccatagtacgcgcc ctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgc tttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgctttacggcac ctcgaccccaaaaaacttgatttgggtgatggttcacgtagtgggccatcgccctgatagacggtttttcgccctttgacgttggagtccacgt tctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcgggctattcttttgatttataagggattttgccgatttcggcctatt ggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgtttacaattttatggtgcactctcagtacaatctgctct gatgccgcatagttaagccagccccgacacccgccaacacccgctgacgcgccctgacgggcttgtctgctcccggcatccgcttacag acaagctgtgaccgtctccgggagctgcatgtgtcagaggttttcaccgtcatcaccgaaacgcgcgagacgaaagggcctcgtgatacg cctatttttataggttaatgtcatgataataatggtttcttagacgtcaggtggcacttttcggggaaatgtgcgcggaacccctatttgtttattttt ctaaatacattcaaatatgtatccgctcatgagacaataaccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacattt ccgtgtcgcccttattcccttttttgcggcattttgccttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttg ggtgcacgagtgggttacatcgaactggatctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcac ttttaaagttctgctatgtggcgcggtattatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttg gttgagtactcaccagtcacagaaaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacac tgcggccaacttacttctgacaacgatcggaggaccgaaggagctaaccgcttttttgcacaacatgggggatcatgtaactcgccttgatc gttgggaaccggagctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaacta ttaactggcgaactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggc ccttccggctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagc cctcccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactgatt aagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttg ataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttcttgagatccttttt ttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagctaccaactctttttccgaa ggtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggccaccacttcaagaactctgtagcaccgc ctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgggttggactcaagacgatagttacc ggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcgaacgacctacaccgaactgagataccta cagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacaggtatccggtaagcggcagggtcggaacaggaga gcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatg ctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctttttacggttcctggccttttgctggccttttgctcacatgt; >AAV CBA-miR122 nucleic acid sequence SEQ ID NO: 34 cctgcaggcagctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagt gagcgagcgagcgcgcagagagggagtggccaactccatcactaggggttcctgccgcgtcgacattgattattgactctggtcgttacat aacttacggtaaatggcccgcctggctgaccgcccaacgaccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaata gggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgcccccta ttgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctactcgaggcc acgttctgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattttttaattattttgtgcagcgatgggggcgggggg ggggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcgaggcggagaggtgcggcggca gccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctataaaaagcgaagcgcgcggcgg gcgggagcgggatcagccaccgcggtggcggccctagagtcgatcgaggaactgaaaaaccagaaagttaactggtaagtttagtctttt tgtcttttatttcaggtcccggatccggtggtggtgcaaatcaaagaactgctcctcagtggatgttgcctttacttctaggcctgtacggaagt gttacttctgctctaaaagctgcggaattgtacccgcggccgatccaccggtcgccaccatctagcatgggagtcaaagttctgtttgccctg atctgcatcgctgtggccgaggccaagcccaccgagaacaacgaagacttcaacatcgtggccgtggccagcaacttcgcgaccacgg atctcgatgctgaccgcgggaagttgcccggcaagaagctgccgctggaggtgctcaaagagatggaagccaatgcccggaaagctgg ctgcaccaggggctgtctgatctgcctgtcccacatcaagtgcacgcccaagatgaagaagttcatcccaggacgctgccacacctacga aggcgacaaagagtccgcacagggcggcataggcgaggcgatcgtcgacattcctgagattcctgggttcaaggacttggagcccatgg agcagttcatcgcacaggtcgatctgtgtgtggactgcacaactggctgcctcaaagggcttgccaacgtgcagtgttctgacctgctcaag aagtggctgccgcaacgctgtgcgacctttgccagcaagatccagggccaggtggacaagatcaagggggccggtggtgactagctcg acgctcaaacaccattgtcacactccaacaaacaccattgtcacactccaacaaacaccattgtcacactccagatcagcctcgactgtgcct tctagttgccagccatctgttgtttgcccctcccccgtgccttccttgaccctggaaggtgccactcccactgtcctttcctaataaaatgagga aattgcatcgcattgtctgagtaggtgtcattctattctggggggtggggtggggcaggacagcaagggggaggattgggaagacaaggc cgcaggaacccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgc ccgggctttgcccgggcggcctcagtgagcgagcgagcgcgcagctgcctgcaggggcgcctgatgcggtattttctccttacgcatctg tgcggtatttcacaccgcatacgtcaaagcaaccatagtacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgca gcgtgaccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagct ctaaatcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgatttgggtgatggttcacgtagtgggc catcgccctgatagacggtttttcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaacccta tctcgggctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaaca aaatattaacgtttacaattttatggtgcactctcagtacaatctgctctgatgccgcatagttaagccagccccgacacccgccaacacccgc tgacgcgccctgacgggcttgtctgctcccggcatccgcttacagacaagctgtgaccgtctccgggagctgcatgtgtcagaggttttcac cgtcatcaccgaaacgcgcgagacgaaagggcctcgtgatacgcctatttttataggttaatgtcatgataataatggtttcttagacgtcagg tggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgagacaataaccctgataa atgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattcccttttttgcggcattttgccttcctgtttttgctc acccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatctcaacagcggtaaga tccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattatcccgtattgacgccggg caagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaaagcatcttacggatggcatgac agtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgacaacgatcggaggaccgaaggagcta accgcttttttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagctgaatgaagccataccaaacgacgagcgtg acaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcgaactacttactctagcttcccggcaacaattaatagact ggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccggctggctggtttattgctgataaatctggagccggtgagcgt gggtctcgcggtatcattgcagcactggggccagatggtaagccctcccgtatcgtagttatctacacgacggggagtcaggcaactatgg atgaacgaaatagacagatcgctgagataggtgcctcactgattaagcattggtaactgtcagaccaagtttactcatatatactttagattgat ttaaaacttcatttttaatttaaaaggatctaggtgaagatcctttttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcg tcagaccccgtagaaaagatcaaaggatcttcttgagatcctttttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccag cggtggtttgtttgccggatcaagagctaccaactctttttccgaaggtaactggcttcagcagagcgcagataccaaatactgtccttctagt gtagccgtagttaggccaccacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtgg cgataagtcgtgtcttaccgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacaca gcccagcttggagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaag gcggacaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtc ctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggc ctttttacggttcctggccttttgctggccttttgctcacatgt; >human soluble IL1Rα nucleic acid sequence SEQ ID NO: 35 atggaaatctgcagaggcctccgcagtcacctaatcactctcctcctcttcctgttccattcagagacgatctgccgaccctctgggagaaaa tccagcaagatgcaagccttcagaatctgggatgttaaccagaagaccttctatctgaggaacaaccaactagttgctggatacttgcaagg accaaatgtcaatttagaagaaaagatagatgtggtacccattgagcctcatgctctgttcttgggaatccatggagggaagatgtgcctgtc ctgtgtcaagtctggtgatgagaccagactccagctggaggcagttaacatcactgacctgagcgagaacagaaagcaggacaagcgctt cgccttcatccgctcagacagtggccccaccaccagttttgagtctgccgcctgccccggttggttcctctgcacagcgatggaagctgacc agcccgtcagcctcaccaatatgcctgacgaaggcgtcatggtcaccaaattctacttccaggaggacgagtagtaa; >synthetic intron nucleic acid sequence SEQ ID NO: 36 gaactgaaaaaccagaaagttaactggtaagtttagtctttttgtcttttatttcaggtcccggatccggtggtggtgcaaatcaaagaactgct cctcagtggatgttgcctttacttcaggcctgtacggaagtgttacttctgctctaaaagctgcggaattgtaccc; >MBL intron nucleic acid sequence SEQ ID NO: 37 tcagatcgcctggagacgccatccacgctgttttgacctccatagaagacaccgggaccgatccagcctccgcggccgggaacggtgca ttggaacgcggattccccgtgccaagagtgacgtaagtaccgcctatagagtctataggcccacccccttggcttcttatgcatgctatactgt ttttggcttggggtctatacacccccgcttcctcatgtttgctgcccgtgaccagcacgtcaacgattttgtgggcacgggcgacaccgcagt gtagtctgagcagtactcgttgctgccgcgcgcgccaccagacataatagctgacagactaacagactgttcctttccatgggtcttttctgca gtcaccgtcgccgc; >OPT ACVR1 protein sequence SEQ ID NO: 38 MVDGVMILPVLIMIALPSPSMEDEKPKVNPKLYMCVCEGLSCGNEDHCEGQQCFSSLSI NDGFHVYQKGCFQVYEQGKMTCKTPPSPGQAVECCQGDWCNRNITAQLPTKGKSFPGT QNFHLEVGLIILSVVFAVCLLACLLGVALRKFKRRNQERLNPRDVEYGTIEGLITTNVGD STLADLLDHSCTSGSGSGLPFLVQRTVARQITLLECVGKGRYGEVWRGSWQGENVAVKI FSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYL QLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLG LAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEV ARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKL MKECWYQNPSARLTALRIKKTLTKIDNSLDKLKTDC*; >Protein sequence corresponding to SEQ ID NO: 5 SEQ ID NO: 39 VFYFRSQI*GSAFAPGSPLLPWAWAH*QPWCLWPAAHLLAGSCECNLVSHLFWQYLSGS ADYTHGGLP*LPTVPWPKRI*GHR*GPT*PSWGIRTVSPLQGIRWWC; >Protein sequence corresponding to SEQ ID NO: 6 SEQ ID NO: 40 RALRLLQVVRCSLGPGPTDSPGASGRLHTSWRAAVSVSW*ATCSGNT*VALRLTLTEACP DCPRCRGQRGSKGTAEGLPNHRGE*GQCHP; >wtACVR1 protein sequence corresponding to SEQ ID NO: 7 SEQ ID NO: 41 SRVQRTVARQITLLEC; >ACVR1-R206H protein sequence corresponding to SEQ ID NO: 8 SEQ ID NO: 42 SRVQRTVARQITLLEC; >sgACVR1 protein sequence SEQ ID NO: 43 GSPDYTV; >hspCas9 protein sequence SEQ ID NO: 44 VTSQLRQVDPCLVQAGDALVDQGGVQHLFGAGVPLPVDGGVKVLEGGRGSQIGQGKQ VDDILGLLSDGLIPVLVVGGQHFVQISVGQDHSLGELADLLDDLVQVVLVLFHKQLFLLI ILGGALQLLIVAGQVQEVHIFGGQGQFVSLLQFAGRGQHSLPAVFQLEQGVLRQLDDQV LFHFFVALGFQKVDGILLEAASFHDGDPQQLFHTLQFLGLALFHFGHHQHRIGHGGAVE AAVLLRVPVLLSGDQLIAVPLGQDRLFAEAACLHLGLFHDIHLGHAQHFPHGGKIPALIP HDLPGFAVCLDQRPLPDLAVGQGNLGLEKVHDVAVEEVLGGSLADFLLALGDHLPHVV HLVVAVHELAFQLRVLFDQGGSHDGVQVGVVGVVVVVDLAHFVKLEILPEIGHQLGLQ GDHFHFPDQLVILVVLSVHPGVQDLCHVLCDLPGFHQLSLDEAGLIQFAQAASLGLGQIV ELSLGNQLGVQQLPPVVLHLLHDLFGGHVVALAPVLVASGQHLVVDGVVLQKALRHD MVHIVVGQPVDVQFLVHVHIPPILQVVQVQLLVLQLGVFHGVFFQDLAAQLFDALFDPL HSLAAVLLSLLGGLVLSGHFDHDVLGLVPAHHFHELVHHLHCLQDALLNGGAAGQIGN VLVQAIALAGHLGFLDVLFKGQAVVVDQLHEVSVGEAVGLQEIQDCLAGLLVPDAVDQ LPAQPAPAGVSPPLQLLHHFVVEQVGIGFQPFLDHLSVLKQCQGQHDIFQNVLVFLIVQE VLVLDNFQQIVVCAQGGVEPIFHAGDFHGVEA; >sFST-288 protein sequence SEQ ID NO: 45 MVRARHQPGGLCLLLLLLCQFMEDRSAQAGNCWLRQAKNGRCQVLYKTELSKEECCS TGRLSTSWTEEDVNDNTLFKWMIFNGGAPNCIPCKETCENVDCGPGKKCRMNKKNKP RCVCAPDCSNITWKGPVCGLDGKTYRNECALLKARCKEQPELEVQYQGRCKKTCRDV FCPGSSTCVVDQTNNAYCVTCNRICPEPASSEQYLCGNDGVTYSSACHLRKATCLLGRSI GLAYEGKCIKAKSCEDIQCTGGKKCLWDFKVGRGRCSLCDELCPDSKSDEPVCASDNAT YASECAMKEAACSSGVLLEVKHSGSCN; >sTNFR2 protein sequence SEQ ID NO: 46 MAPVAVWAALAVGLELWAAAHALPAQVAFTPYAPEPGSTCRLREYYDQTAQMCCSKCS PGQHAKVFCTKTSDTVCDSCEDSTYTQLWNWVPECLSCGSRCSSDQVETQACTREQNR ICTCRPGWYCALSKQEGCRLCAPLRKCRPGFGVARPGTETSDVVCKPCAPGTFSNTTSS TDICRPHQICNVVAIPGNASMDAVCTSTSPTRSMAPGAVHLPQPVSTRSQHTQPTPEPSTA PSTSFLLPMGPSPPAEGSTGDFALPV; >miR-122 protein sequence SEQ ID NO: 47 QTPLSHSNKHHCHTPTNTIVTL; miR-208 binding sites SEQ ID NO: 48 ACAAGCTTTTTGCTCGTCTTATACAAGCTTTTTGCTCGTCTTATACAAGCTTTTTGCT CGTCTTAT; pAAVss-CB-PI(MBL-amiRACVR1-A9)-opt-ACVR1-miR-122T.miR-208aT SEQ ID NO: 49 ctgcgcgctcgctcgctcactgaggccgcccgggcaaagcccgggcgtcgggcgacctttggtcgcccggcctcagtgagcgagcga gcgcgcagagagggagtggccaactccatcactaggggttccttgtagttaatgattaacccgccatgctacttatctaccagggtaatggg gatcctctagaactatagctagtcgacattgattattgactagttattaatagtaatcaattacggggtcattagacatagcccatatatggaga ccgcgttacataacttacggtaaatggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgacccatag taacgccaatagggactttccattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaag tacgccccctattgacgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatc tacgtattagtcatcgctattaccatgtcgaggccacgactgcttcactctccccatctcccccccctccccacccccaattttgtatttatttattt tttaattattttgtgcagcgatgggggcggggggggggggcgcgcgccaggcggggcggggcggggcgaggggcggggcggggcg aggcggagaggtgcggcggcagccaatcagagcggcgcgctccgaaagtttccttttatggcgaggcggcggcggcggcggccctat aaaaagcgaagcgcgcggcgggcgggagcaagctttcagatcgcctggagacgccatccacgctgttttgacctccatagaagacacc gggaccgatccagcctccgcggccgggaacggtgcattggaacgcggattccccgtgccaagagtgacgtaagtaccgcctatagagtc tataggcccacccccttggcttcttatgcatgctatactgtttttggcttggggtctatacacccccgcttcctcatgttTGCTGCCCGT GACCAGCACGTCAACGATTTTGTGGGCACGGGCGACACcgcagtgtagtctgagcagtactcgttgct gccgcgcgcgccaccagacataatagctgacagactaacagactgttcctttccatgggtcttttctgcaAGGGCTCTGCGTTT GCTCCAGGTAGTCCGCTGCTCCCTTGGGCCTGGGCCCACTGACAGCCCTGGTGCCTC TGGCCGGCTGCACACCTCCTGGCGGGCAGCTGTGtgtaatctggtgagccactgtTGTTCTGGCA ATACCTGACAGTGGCAGATCAGATTACACACGGAGGCCTGCCCTGACTGCCCACGG TGCCGTGGCCAAAGAGGATCTAAGGGCACCGCTGAGGGCCTACCTAACCATCGTGG GGAATAAGGACAGTGTCACCCtgcagtcaccgtcgccgccaccggtgaattccgccaccatggtcgatggagtgatg atcctgcctgtcctgattatgattgccctgcccagccccagcatggaagatgaaaaacctaaagtcaaccctaagctgtatatgtgcgtgtgc gagggcctgagctgcggaaacgaggatcactgcgagggccagcagtgtttcagctccctgtccatcaatgacggcttccacgtgtaccag aagggctgctttcaggtgtatgagcagggcaagatgacctgtaagacaccaccttccccaggacaggcagtggagtgctgtcagggcgat tggtgtaaccggaatatcaccgcccagctgccaacaaagggcaagtctttccccggcacacagaactttcacctggaagtgggcctgatca tcctgagcgtggtgttcgccgtgtgcctgctggcatgtctgctgggagtggccctgagaaagtttaagcggagaaaccaggagcggctga atccaagagatgtggagtacggcaccatcgagggcctgatcaccacaaatgtgggcgactctacactggccgacctgctggatcacagct gcaccagcggctccggatctggcctgccctttctggtgcagaggaccgtggcccggcagatcaccctgctggagtgcgtgggcaaggg ccggtacggagaagtgtggagaggatcctggcagggagagaacgtggcagtgaagatcttctctagccgggatgagaagtcttggtttag agagacagagctgtataacacagtgatgctgaggcacgagaatatcctgggcttcatcgcctccgacatgacctctcgccactcctctacac agctgtggctgatcacccactaccacgagatgggctccctgtacgattacctccagctgaccacactggacacagtgtatgcctgcggatc gtgctgtctatcgccagcggcctggcacacctgcacatcgagatctttggaacccagggcaagccagcaatcgcacacagagatctgaag tctaagaacatcctggtgaagaagaatggccagtgctgtatcgccgatctgggcctggccgtgatgcacagccagtccaccaaccagctg gacgtgggcaacaatcctcgggtgggcacaaagagatacatggccccagaggtgctggatgagacaatccaggtggactgcttcgatag ctataagagggtggacatctgggcctttggcctggtgctgtgggaggtggcaaggaggatggtgagcaacggcatcgtggaggactaca agccacccttctatgacgtggtgcctaatgatccatcctttgaggacatgcgcaaggtggtgtgcgtggatcagcagaggcccaacatccct aatcgctggttcagcgaccccaccctgacatccctggccaagctgatgaaggagtgaggtatcagaatcctagcgccaggctgaccgcc ctgcgcatcaagaaaactctgactaaaatcgacaatagcctggataaactgaaaaccgactgctgaccTgAACAAGCTTTTTG CTCGTCTTATACAAGCTTTTTGCTCGTCTTATACAAGCTTTTTGCTCGTCTTATacaaaca ccattgtcacactccaacaaacaccattgtcacactccaacaaacaccattgtcacactccatgaggatccgatctttttccctctgccaaaaat tatggggacatcatgaagccccttgagcatctgacttctggctaataaaggaaatttattttcattgcaatagtgtgttggaattttttgtgtctctc actcggaagcaattcgttgatctgaatttcgaccacccataatacccattaccctggtagataagtagcatggcgggttaatcattaactacaa ggaacccctagtgatggagttggccactccctctctgcgcgctcgctcgctcactgaggccgggcgaccaaaggtcgcccgacgcccgg gctttgcccgggcggcctcagtgagcgagcgagcgcgcag; Nucleic acid sequence encoding RH3 ami-RNA SEQ ID NO: 56 gtcttttatttcaggtcccagatctagggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcc tctggccggctgcacacctcctggcgggcagctgtgagtgtaatctggtgagccacttgttctggcaatacctgagtggctctgcggattac actcacggaggcctgccctgactgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggg gaataaggacagtgtcacccctgcaggggatccggtggtggtgc; Nucleic acid sequence encoding RH4 ami-RNA SEQ ID NO: 57 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtggtgtaagctggtgagccactgtgttctggcaatacctgcagtggctgtctagcttacaccacggaggcctgccctga ctgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; Nucleic acid sequence encoding RH5 ami-RNA SEQ ID NO: 58 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtgtgtaagctggtgagccactgttgttctggcaatacctgacagtggcagatcagcttacacacggaggcctgccctga ctgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; Nucleic acid sequence encoding RH6 ami-RNA SEQ ID NO: 59 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtgtgtaatctggtgagccactgttgttctggcaatacctgacagtggcagatcagattacacacggaggcctgccctga ctgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; Nucleic acid sequence encoding RH7 ami-RNA SEQ ID NO: 60 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtggtaatctggtgagccactgtttgttctggcaatacctgaacagtgggacgccagattaccacggaggcctgccctga ctgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; Nucleic acid sequence encoding RH8 ami-RNA SEQ ID NO: 61 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtggtaagctggtgagccactgtttgttctggcaatacctgaacagtgggacgccagcttaccacggaggcctgccctg actgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; Nucleic acid sequence encoding RH9 ami-RNA SEQ ID NO: 62 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtgtaatctggtgagccactgttctgttctggcaatacctggaacagtgcgttaccagattacacggaggcctgccctgac tgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; Nucleic acid sequence encoding RH10 ami-RNA SEQ ID NO: 63 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtgtaagctggtgagccactgttctgttctggcaatacctggaacagtgcgttaccagcttacacggaggcctgccctga ctgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; Nucleic acid sequence encoding RH11 ami-RNA SEQ ID NO: 64 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtgaatctggtgagccactgttcttgttctggcaatacctgagaacagtcccccaccagattcacggaggcctgccctga ctgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; Nucleic acid sequence encoding RH12 ami-RNA SEQ ID NO: 65 agggctctgcgtttgctccaggtagtccgctgctcccttgggcctgggcccactgacagccctggtgcctctggccggctgcacacctcct ggcgggcagctgtgaagctggtgagccactgttcttgttctggcaatacctgagaacagtcccccaccagcttcacggaggcctgccctga ctgcccacggtgccgtggccaaagaggatctaagggcaccgctgagggcctacctaaccatcgtggggaataaggacagtgtcaccc; 

1-16. (canceled)
 17. A recombinant gene editing complex comprising: (i) a single guide RNA (sgRNA) that specifically hybridizes to a target nucleic acid sequence of an ACVR1 gene; (ii) a first rAAV particle encoding a first recombinant gene editing protein or fragment thereof; and (iii) a second rAAV particle encoding a second recombinant gene editing protein or fragment thereof.
 18. The recombinant gene editing complex of claim 17, wherein the first recombinant gene editing protein comprises a Cas9-based adenine base editor (ABE) N-terminus portion and its fragments thereof and wherein the second recombinant gene editing protein comprises a Cas9-based adenine base editor (ABE) C-terminus portion and its fragments thereof, optionally wherein the second recombinant gene editing protein comprises a Cas9-based adenine base editor (ABE) C-terminus portion and its fragments thereof.
 19. The recombinant gene editing complex of claim 17, further comprising a protospacer adjacent motif.
 20. The recombinant gene editing complex of 17, wherein the recombinant gene editing protein is a protein of the Crisper/Cas9 system.
 21. The recombinant gene editing complex of 17, wherein the rAAV particles comprises an AAV9 capsid protein or variant thereof or an AAV6.2 capsid protein or variant thereof.
 22. The recombinant gene editing complex of claim 18, wherein each of the N-terminal ABE construct and the C-terminal ABE construct is divided by using a trans-splicing intein sequence.
 23. The recombinant gene editing complex of claim 22, wherein the N-terminal ABE construct comprises protospacer having the ACVR1-R206H mutation.
 24. The recombinant gene editing complex of claim 22, wherein the C-terminal ABE construct is integrated into the AAV6.2 or AAV9 capsid protein. 25-30. (canceled) 